Once the path of a railway tunnel, now home to thousands of glowing insects.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

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

An ancient capital city that dates back 3,000 years old and harbors many surprises.

The tallest bronze seated statue of the Buddha in Japan.

The small cliffside monastery known as the Tiger's Nest is said to be the meditation site of an eighth-century Buddhist master.

A massive underwater sinkhole made famous by Jacques Cousteau.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

Monasteries on rock pillars, once accessible only by frayed ropes.

A magical place that lets you play in and explore the world of Studio Ghibli.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Malaysian fireflies create a dazzling display as thousands light up in unison.

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