Discover 36 Endangered UNESCO Masterpieces Before We Loose Them Completely

Designed to rival Hagia Sophia in Constantinople, Kyiv's Saint-Sophia Cathedral symbolizes the 'new Constantinople', capital of the Christian principality of Kyiv, which was created in the 11th century in a region evangelized after the baptism of St Vladimir in 988. The spiritual and intellectual influence of Kyiv-Pechersk Lavra contributed to the spread of Orthodox thought and the Orthodox faith in the Russian world from the 17th to the 19th century.

In the 16th century, this area was regarded as the world’s largest industrial complex. The extraction of silver ore relied on a series of hydraulic mills. The site consists of the industrial monuments of the Cerro Rico, where water is provided by an intricate system of aqueducts and artificial lakes; the colonial town with the Casa de la Moneda; the Church of San Lorenzo; several patrician houses; and the barrios mitayos, the areas where the workers lived.

A large fortified city under the influence of the Parthian Empire and capital of the first Arab Kingdom, Hatra withstood invasions by the Romans in A.D. 116 and 198 thanks to its high, thick walls reinforced by towers. The remains of the city, especially the temples where Hellenistic and Roman architecture blend with Eastern decorative features, attest to the greatness of its civilization.

Founded in the 3rd millennium B.C., Damascus is one of the oldest cities in the Middle East. In the Middle Ages, it was the centre of a flourishing craft industry, specializing in swords and lace. The city has some 125 monuments from different periods of its history – one of the most spectacular is the 8th-century Great Mosque of the Umayyads, built on the site of an Assyrian sanctuary.

Bosra, once the capital of the Roman province of Arabia, was an important stopover on the ancient caravan route to Mecca. A magnificent 2nd-century Roman theatre, early Christian ruins and several mosques are found within its great walls.

Vienna developed from early Celtic and Roman settlements into a Medieval and Baroque city, the capital of the Austro-Hungarian Empire. It played an essential role as a leading European music centre, from the great age of Viennese Classicism through the early part of the 20th century. The historic centre of Vienna is rich in architectural ensembles, including Baroque castles and gardens, as well as the late-19th-century Ringstrasse lined with grand buildings, monuments and parks.

As a holy city for Judaism, Christianity and Islam, Jerusalem has always been of great symbolic importance. Among its 220 historic monuments, the Dome of the Rock stands out: built in the 7th century, it is decorated with beautiful geometric and floral motifs. It is recognized by all three religions as the site of Abraham's sacrifice. The Wailing Wall delimits the quarters of the different religious communities, while the Resurrection rotunda in the Church of the Holy Sepulchre houses Christ's tomb.

A colony of the Greeks of Thera, Cyrene was one of the principal cities in the Hellenic world. It was Romanized and remained a great capital until the earthquake of 365. A thousand years of history is written into its ruins, which have been famous since the 18th century.

Leptis Magna was enlarged and embellished by Septimius Severus, who was born there and later became emperor. It was one of the most beautiful cities of the Roman Empire, with its imposing public monuments, harbour, market-place, storehouses, shops and residential districts.

A Phoenician trading-post that served as an outlet for the products of the African hinterland, Sabratha was part of the short-lived Numidian Kingdom of Massinissa before being Romanized and rebuilt in the 2nd and 3rd centuries A.D.

The historic centre of Shakhrisyabz contains a collection of exceptional monuments and ancient quarters which bear witness to the city's secular development, and particularly to the period of its apogee, under the rule of Amir Temur and the Temurids, in the 15th-16th century.

The ancient city of Ashur is located on the Tigris River in northern Mesopotamia in a specific geo-ecological zone, at the borderline between rain-fed and irrigation agriculture. The city dates back to the 3rd millennium BC. From the 14th to the 9th centuries BC it was the first capital of the Assyrian Empire, a city-state and trading platform of international importance. It also served as the religious capital of the Assyrians, associated with the god Ashur. The city was destroyed by the Babylonians, but revived during the Parthian period in the 1st and 2nd centuries AD.

An oasis in the Syrian desert, north-east of Damascus, Palmyra contains the monumental ruins of a great city that was one of the most important cultural centres of the ancient world. From the 1st to the 2nd century, the art and architecture of Palmyra, standing at the crossroads of several civilizations, married Graeco-Roman techniques with local traditions and Persian influences.

Zabid's domestic and military architecture and its urban plan make it an outstanding archaeological and historical site. Besides being the capital of Yemen from the 13th to the 15th century, the city played an important role in the Arab and Muslim world for many centuries because of its Islamic university.

The church, baptistry, basilicas, public buildings, streets, monasteries, houses and workshops in this early Christian holy city were built over the tomb of the martyr Menas of Alexandria, who died in A.D. 296.

Located in northern Lebanon, the Rachid Karameh International Fair of Tripoli was designed in 1962 by the Brazilian architect Oscar Niemeyer on a 70-hectare site located between the historic centre of Tripoli and the Al Mina port. The main building of the fair consists of a huge covered hall in the shape of a boomerang of 750 metres by 70 metres, a flexible space for countries to install exhibitions. The fair was the flagship project of Lebanon's modernization policy in the 1960s. The close collaboration between Oscar Niemeyer, the architect of the project, and Lebanese engineers gave rise to a remarkable example of exchange between different continents. In terms of scale and wealth of formal expression, it is one of the major representative works of 20th century modern architecture in the Arab Near East.

On the borders of Tassili N'Ajjer in Algeria, also a World Heritage site, this rocky massif has thousands of cave paintings in very different styles, dating from 12,000 B.C. to A.D. 100. They reflect marked changes in the fauna and flora, and also the different ways of life of the populations that succeeded one another in this region of the Sahara.

Inhabited since 250 B.C., Djenné became a market centre and an important link in the trans-Saharan gold trade. In the 15th and 16th centuries, it was one of the centres for the propagation of Islam. Its traditional houses, of which nearly 2,000 have survived, are built on hillocks (toguere) as protection from the seasonal floods.

Located in the Metalliferous range of the Apuseni Mountains in the west of Romania, Roșia Montană features the most significant, extensive and technically diverse underground Roman gold mining complex known at the time of inscription. As Alburnus Maior, it was the site of extensive gold-mining during the Roman Empire. Over 166 years starting in 106 CE, the Romans extracted some 500 tonnes of gold from the site developing highly engineered works, different types of galleries totalling 7km and a number of waterwheels in four underground localities chosen for their high-grade ore. Wax‐coated wooden writing tablets have provided detailed legal, socio‐economic, demographic and linguistic information about the Roman mining activities, not just in Alburnus Maior but also across the wider Dacian province. The site demonstrates a fusion of imported Roman mining technology with locally developed techniques, unknown elsewhere from such an early era. Mining on the site was also carried out, albeit to a lesser extent, between medieval times and the modern era. The later extractive works surround and cut across the Roman galleries. The ensemble is set in an agro-pastoral landscape which largely reflects the structures of the communities that supported the mines between the 18th and early 20th centuries.

This site is located a few kilometres south-west of Jerusalem, in the Central Highlands between Nablus and Hebron. The Battir hill landscape comprises a series of farmed valleys, known as widian, with characteristic stone terraces, some of which are irrigated for market garden production, while others are dry and planted with grapevines and olive trees. The development of terrace farming in such a mountainous region is supported by a network of irrigation channels fed by underground sources. A traditional system of distribution is then used to share the water collected through this network between families from the nearby village of Battir.

Some 40 villages grouped in eight parks situated in north-western Syria provide remarkable testimony to rural life in late Antiquity and during the Byzantine period. Abandoned in the 8th to 10th centuries, the villages, which date from the 1st to 7th centuries, feature a remarkably well preserved landscape and the architectural remains of dwellings, pagan temples, churches, cisterns, bathhouses etc. The relict cultural landscape of the villages also constitutes an important illustration of the transition from the ancient pagan world of the Roman Empire to Byzantine Christianity. Vestiges illustrating hydraulic techniques, protective walls and Roman agricultural plot plans furthermore offer testimony to the inhabitants' mastery of agricultural production.

The city of L''viv, founded in the late Middle Ages, was a flourishing administrative, religious and commercial centre for several centuries. The medieval urban topography has been preserved virtually intact (in particular, there is evidence of the different ethnic communities who lived there), along with many fine Baroque and later buildings.

Surrounded by a fortified wall, the 16th-century city of Shibam is one of the oldest and best examples of urban planning based on the principle of vertical construction. Its impressive tower-like structures rise out of the cliff and have given the city the nickname of ‘the Manhattan of the desert’.

The Landmarks of the Ancient Kingdom of Saba, Marib, is a serial property comprising seven archaeological sites that bear witness to the rich Kingdom of Saba and its architectural, aesthetic and technological achievements from the 1st millennium BCE to the arrival of Islam around 630 CE. They bear witness to the complex centralized administration of the Kingdom when it controlled much of the incense route across the Arabian Peninsula, playing a key role in the wider network of cultural exchange fostered by trade with the Mediterranean and East Africa. Located in a semi-arid landscape of valleys, mountains and deserts, the property encompasses the remains of large urban settlements with monumental temples, ramparts and other buildings. The irrigation system of ancient Ma'rib reflects technological prowess in hydrological engineering and agriculture on a scale unparalleled in ancient South Arabia, resulting in the creation of the largest ancient man-made oasis.

The cultural landscape and archaeological remains of the Bamiyan Valley represent the artistic and religious developments which from the 1st to the 13th centuries characterized ancient Bakhtria, integrating various cultural influences into the Gandhara school of Buddhist art. The area contains numerous Buddhist monastic ensembles and sanctuaries, as well as fortified edifices from the Islamic period. The site is also testimony to the tragic destruction by the Taliban of the two standing Buddha statues, which shook the world in March 2001.

The 65m-tall Minaret of Jam is a graceful, soaring structure, dating back to the 12th century. Covered in elaborate brickwork with a blue tile inscription at the top, it is noteworthy for the quality of its architecture and decoration, which represent the culmination of an architectural and artistic tradition in this region. Its impact is heightened by its dramatic setting, a deep river valley between towering mountains in the heart of the Ghur province.

Ghadamès, known as 'the pearl of the desert', stands in an oasis. It is one of the oldest pre-Saharan cities and an outstanding example of a traditional settlement. Its domestic architecture is characterized by a vertical division of functions: the ground floor used to store supplies; then another floor for the family, overhanging covered alleys that create what is almost an underground network of passageways; and, at the top, open-air terraces reserved for the women.

Nan Madol is a series of more than 100 islets off the south-east coast of Pohnpei that were constructed with walls of basalt and coral boulders. These islets harbour the remains of stone palaces, temples, tombs and residential domains built between 1200 and 1500 CE. These ruins represent the ceremonial centre of the Saudeleur dynasty, a vibrant period in Pacific Island culture. The huge scale of the edifices, their technical sophistication and the concentration of megalithic structures bear testimony to complex social and religious practices of the island societies of the period. The site was also inscribed on the List of World Heritage in Danger due to threats, notably the siltation of waterways that is contributing to the unchecked growth of mangroves and undermining existing edifices.

The Chimu Kingdom, with Chan Chan as its capital, reached its apogee in the 15th century, not long before falling to the Incas. The planning of this huge city, the largest in pre-Columbian America, reflects a strict political and social strategy, marked by the city's division into nine 'citadels' or 'palaces' forming autonomous units.

Located at the crossroads of several trade routes from the 2nd millennium B.C., Aleppo was ruled successively by the Hittites, Assyrians, Arabs, Mongols, Mamelukes and Ottomans. The 13th-century citadel, 12th-century Great Mosque and various 17th-century madrasas, palaces, caravanserais and hammams all form part of the city's cohesive, unique urban fabric, now threatened by overpopulation.

These two castles represent the most significant examples illustrating the exchange of influences and documenting the evolution of fortified architecture in the Near East during the time of the Crusades (11th - 13th centuries). The Crac des Chevaliers was built by the Hospitaller Order of Saint John of Jerusalem from 1142 to 1271. With further construction by the Mamluks in the late 13th century, it ranks among the best-preserved examples of the Crusader castles. The Qal’at Salah El-Din (Fortress of Saladin), even though partly in ruins, represents an outstanding example of this type of fortification, both in terms of the quality of construction and the survival of historical stratigraphy. It retains features from its Byzantine beginnings in the 10th century, the Frankish transformations in the late 12th century and fortifications added by the Ayyubid dynasty (late 12th to mid-13th century).

The historic centre of Shakhrisyabz contains a collection of exceptional monuments and ancient quarters which bear witness to the city's secular development, and particularly to the period of its apogee, under the rule of Amir Temur and the Temurids, in the 15th-16th century.

Situated in a mountain valley at an altitude of 2,200 m, Sana’a has been inhabited for more than 2,500 years. In the 7th and 8th centuries the city became a major centre for the propagation of Islam. This religious and political heritage can be seen in the 103 mosques, 14 hammams and over 6,000 houses, all built before the 11th century. Sana’a’s many-storeyed tower-houses built of rammed earth (pisé) add to the beauty of the site.

The four edifices of the site reflect the high points of the Byzantine-Romanesque ecclesiastical culture, with its distinct style of wall painting, which developed in the Balkans between the 13th and 17th centuries. The Dečani Monastery was built in the mid-14th century for the Serbian king Stefan Dečanski and is also his mausoleum. The Patriarchate of Peć Monastery is a group of four domed churches featuring series of wall paintings. The 13th-century frescoes of the Church of Holy Apostles are painted in a unique, monumental style. Early 14th-century frescoes in the church of the Holy Virgin of Ljevisa represent the appearance of the new so-called Palaiologian Renaissance style, combining the influences of the eastern Orthodox Byzantine and the Western Romanesque traditions. The style played a decisive role in subsequent Balkan art.

Samarra Archaeological City is the site of a powerful Islamic capital city that ruled over the provinces of the Abbasid Empire extending from Tunisia to Central Asia for a century. Located on both sides of the River Tigris 130 km north of Baghdad, the length of the site from north to south is 41.5 km; its width varying from 8 km to 4 km. It testifies to the architectural and artistic innovations that developed there and spread to the other regions of the Islamic world and beyond. The 9th-century Great Mosque and its spiral minaret are among the numerous remarkable architectural monuments of the site, 80% of which remain to be excavated.

Magnificent examples of 17th- and 18th-century military architecture, these Panamanian forts on the Caribbean coast form part of the defence system built by the Spanish Crown to protect transatlantic trade.