The UN has expanded its list of the world's most valuable cultural treasures, adding Australia's Sydney Opera House, described as having lasting architectural influence.
The archaeological city in Samarra, Iraq, was added to the list and was immediately registered as being in danger.
Lope-Okanda in Gabon was added because of its unusual mix of culture and nature, with rainforest and savannah environments home to a great diversity of animals.
India's Red Fort complex, completed in 1648, was honoured for reflecting Indian history from the Mughal period through to independence.
Twyfelfontein in Namibia, which has one of the largest concentrations of rock carvings in Africa, is the country's first World Heritage site.
The French city of Bordeaux in the south-west also made the list as the location of one of Europe's biggest 18th Century architectural urban areas.
The Diaolou villages in Kaiping, in China's Guangdong province, feature 1,800 fortified tower houses. They were built as a response to banditry in the late 19th and early 20th Century.
The old town of Corfu in Greece also made the Unesco list. Unesco aims to work with national governments to preserve sites of world cultural significance.