This structure, built more than 60 years ago to manage devastating seasonal floods, is known to attract a rare species of freshwater dolphin.

Nepal is home to the world’s tallest Shiva statue.

This restaurant preserves and serves lesser-known and regional Nepali food.

This religious site features Nepal’s largest statue of Buddha.

This elegant neoclassical garden is a peaceful oasis in the middle of the Nepalese capital.

Jumping-off point for a climb up Mt. Everest is the most dangerous airport in the world.

Named after the Goddess of Harvests, Annapurna is the deadliest member of the Eight-thousanders club.

One of the largest Buddhist stupas in the world keeps an eye out in every direction.

Last stop before the top of the highest peak in the world.

This historic square in Nepal is home to temples dating back to the third century.

Sacred Buddhist home of some spiritual monkeys.

This Gallo-Roman sanctuary is dedicated to Serápis, god of the underworld.

An honorary saint of the people, Maria Adelaide became an incorrupt corpse, the clothes intact, exhaling “a strong scent of roses.”

The medieval town's star-shaped walls are geometrically dazzling, though not entirely impenetrable.

A windswept necropolis carved into the rocks overlooks the "most Portuguese town in Portugal."

A small but charming botanical garden that contains many exotic plant species.

This abandoned five-star hotel is now a five-star urban exploration destination.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

Picturesque intersection of witchcraft and ancient Christianity.

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

A unique seaside cave where Aleister Crowley faked his own death.

Perhaps the most spectacular grotto along the Algarve coastline.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

The stunning interior of this Gothic church is covered in ornate gold details.