It houses the remains of a 17th-century version of the Titanic.

Swarms of dainty flying insects swarm into the Petaloudes Valley to get busy.

Underground hospital complex constructed by slave laborers during the German occupation of the Channel Islands.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

A marvel of Byzantine engineering under the streets of Istanbul.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

Slyly buy a shake in the Parker Meridien lobby.

A monument celebrating the idea of reaching inaccessible places.

Climb inside an iron crystal magnified 165 billion times its normal size.

A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.

A little sculpture with a large wardrobe.

The fairy tale castle of the "fairy-tale king."

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Auburn's iconic eagle flight goes back to a 19th century eagle that dropped dead on the field after inspiring the football team to victory.

This deceptively salty lake looks like blushing pink lemonade.

This luxury shopping lane has been protected by its own tiny police force for over a century.

France's most famous cemetery, with some of its most curious tombs.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

This chilly Canadian hotel has a four-month lifespan due to the unusual material it's made of.

A sprawling nature preserve harbors the world's only living dragons.