Home to nearly a third of the world's mud volcanoes, Azerbaijan is home to a messy, bubbling, and sometimes explosive landscape.

A fiery crater has been burning in the Karakum Desert since 1971.

A seemingly endless landscape of pure salt stretches far across Bolivia.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

A geological oddity topped with a 2,000-year-old pagan temple.

A huge monument to a bizarre book written by Turkmenistan’s longstanding dictator.

Roman ruins top white travertine terraces formed by ancient hot springs.

Burial site of a Jewish prophet revered in Iran.

Named after a legendary garden called Eram in southern Arabia, built by order of Shaddad, an Arab king who wanted to compete with Paradise.