Kandovan Caves, Iran part 1/2: This video explores the unique 13th century village of Kandovan in Iran, where the residents live in cone-shaped troglodyte homes carved out of volcanic rock. The caves provide natural protection from...

The Spis Castle was build some 900 years ago, in the 12th century, on the site of an earlier castle. As an important political, economic and cultural center for this part of Kingdom of Hungary, several kings and families owned the...

The monastery was built to thank the Virgin Mary for the Portuguese victory over the Castilians in the battle of Aljubarrota in 1385, fulfilling a promise of King John I of Portugal. The battle put an end to the 1383-85 Crisis. Work...

Lansing is director of the Complexity Institute at Nanyang Technological University. He also is an external professor at the Santa Fe Institute, professor Emeritus at the University of Arizona and senior fellow at theStockholm Resilience...

The main feature of the Ngorongoro Conservation Authority is the Ngorongoro Crater, the world's largest inactive, intact and unfilled volcanic caldera. The crater, which formed when a large volcano exploded and collapsed on itself two to...

The Regaleira Palace bears the same name as the entire estate. The structure's facade is characterized by exuberantly Gothic pinnacles, gargoyles, capitals, and an impressive octagonal tower. The palace contains five floors .The ground...

Chichen Itza was one of the largest Maya cities and it was likely to have been one of the mythical great cities, or Tollans, referred to in later Mesoamerican literature. The city may have had the most diverse population in the Maya...