An abandoned saucer-shaped monument in the Bulgarian mountains.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

This tiny Bulgarian town offers a stunning location in the mountains and a storied history.

The Uros people live on floating reed islands in lake Titicaca.

Mystic Incan rock piles three miles above sea level.

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

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

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 most famous location in China was home to whole dynasties worth of imperial rulers.

Granting the right of way to ships over surface traffic since 1917.

A giant Troll lurks under one of Seattle's oldest bridges.

A walk through the historic city center, under the streets of Seattle.

A museum dedicated to the history and exploration of both popular music and science fiction.

Sacred Buddhist home of some spiritual monkeys.

These homes carved into the mountains seem to defy the laws of nature.

The central mosque of this Mali town is entirely built from mud.

An ancient iron pillar in Delhi that seems to be rustproof.

A blooming house of worship for the masses.

A complex of six forts embedded in the Rajasthan hills.

The world's second-largest sundial, made entirely out of stone.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

The oldest inn in England served brew to the crusaders.

6000-year-old site covered in more than 50 megaliths.

Semi-precious Blue John stones have been mined in this cavern system for centuries.