A monument to the more than one million enslaved Africans deported from the port of Ouidah.

An early 20th-century sanatorium, long abandoned and now being reclaimed by nature.

The first version of this stalwart construction appeared around 3,000 years ago.

Known as "The People's Park," this verdant oasis is home to elephants and villagers alike.

This ancient Silk Road outpost overlooking the Wakhan Valley is miraculously still standing.

The ruins of an ancient Zoroastrian Tower of Silence believed to be the earliest example of the traditional funerary practice.

This tiny island featuring 9th-century Viking ruins is only accessible at low tide.

The ruins of an abandoned cemetery are among the last remnants of the old village of La Boulaye before a wealthy landowner had it relocated.

A dazzling temple featuring a towering 12-meter golden Buddha.

Wondrous stalactites house thousands of bats in these African caves.

The gravestone of a famous poet features a fittingly poetic epitaph chosen by the writer himself.

Light still pours into the ruins of this ancient Islamic observatory.

The largest known meteorite on Earth was too big to move.