Historic Centre of Mexico City and Xochimilco

Built in the 16th century by the Spanish on the ruins of Tenochtitlan, the old Aztec capital, Mexico City is now one of the world's largest and most densely populated cities. It has five Aztec temples, the ruins of which have been identified, a cathedral (the largest on the continent) and some fine 19th- and 20th-century public buildings such as the Palacio de las Bellas Artes. Xochimilco lies 28 km south of Mexico City. With its network of canals and artificial islands, it testifies to the efforts of the Aztec people to build a habitat in the midst of an unfavourable environment. Its characteristic urban and rural structures, built since the 16th century and during the colonial period; have been preserved in an exceptional manner.

Okavango Delta, Botswana

This delta in north-west Botswana comprises permanent marshlands and seasonally flooded plains. It is one of the very few major interior delta systems that do not flow into a sea or ocean, with a wetland system that is almost intact. One of the unique characteristics of the site is that the annual flooding from the River Okavango occurs during the dry season, with the result that the native plants and animals have synchronized their biological cycles with these seasonal rains and floods. It is an exceptional example of the interaction between climatic, hydrological and biological processes. The Okavango Delta is home to some of the world’s most endangered species of large mammal, such as the cheetah, white rhinoceros, black rhinoceros, African wild dog and lion.

Millenary Benedictine Abbey of Pannonhalma and its Natural Environment, Hungary

The first Benedictine monks settled here in 996. They went on to convert the Hungarians, to found the country's first school and, in 1055, to write the first document in Hungarian. From the time of its founding, this monastic community has promoted culture throughout central Europe. Its 1,000-year history can be seen in the succession of architectural styles of the monastic buildings (the oldest dating from 1224), which still today house a school and the monastic community.

Benedictine Convent of St John at Müstair, Switzerland

The Convent of Müstair, which stands in a valley in the Grisons, is a good example of Christian monastic renovation during the Carolingian period. It has Switzerland's greatest series of figurative murals, painted c. A.D. 800, along with Romanesque frescoes and stuccoes.

Canaima National Park, Venezuela

Canaima National Park is spread over 3 million ha in south-eastern Venezuela along the border between Guyana and Brazil. Roughly 65% of the park is covered by table mountain (tepui) formations. The tepuis constitute a unique biogeological entity and are of great geological interest. The sheer cliffs and waterfalls, including the world's highest (1,000 m), form a spectacular landscape.

Rjukan-Notodden Industrial Heritage Site, Norway

Located in a dramatic landscape of mountains, waterfalls and river valleys, the site comprises hydroelectric power plants, transmission lines, factories, transport systems and towns. The complex was established by the Norsk-Hydro Company to manufacture artificial fertilizer from nitrogen in the air. It was built to meet the Western world’s growing demand for agricultural production in the early 20th century. The company towns of Rjukan and Notodden show workers’ accommodation and social institutions linked by rail and ferry to ports where the fertilizer was loaded. The Rjukan-Notodden site manifests an exceptional combination of industrial assets and themes associated to the natural landscape. It stands out as an example of a new global industry in the early 20th century.

Tunisia

On the Mediterranean Sea, Tunisia is a North African country whose culture dates to antiquity. In the capital, Tunis, the palatial Bardo Museum presents archaeological exhibits from Roman mosaics to Islamic art. The city’s medina quarter encompasses the massive Al-Zaytuna Mosque and a thriving ancient souk. To the east, the ancient Carthage site features the Antonine baths and other ruins, plus artifacts at the Carthage National Museum.