An ancient and majestic fortress that played an integral role in Portugal's road to independence.

A star fort along the C&O Canal in western Maryland that protected America in three wars.

The view from this giant Stone Age toad is unexpectedly beautiful.

For centuries no one knew there were hundreds of bones and precious artwork hidden beneath this Swiss church.

An unrecognized micronation declared by Greenpeace to protect the glaciers of Chile.

In a strange timezone anomaly, Daylight Saving Time here sets the clocks forward just 30 minutes.

Elaborate mansions built by Roma residents in Soroca to show their success after centuries of discrimination.

This Croatian fairytale castle is slowly falling apart thanks to years of neglect.

This Brazilian palace island was once the site of the last grand ball before revolution.

This century old flensing port is a remnant of a culture for whom whaling is still legal.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

A trio of red, white, and blue stones embedded in the streets of Leiden are markers of medieval territory and law.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

This natural French spring has been turned into a magical grotto by Roman and medieval constructions.

One man's ambition created this psychedelic log home.

A simple plaque remembers a California island massacre that claimed more than 100 lives.

While not Turkey's deepest underground city, this subterranean redoubt is the largest.

The world's largest collection of intentionally useless inventions.

A flower grows on this giant stone that is said be able to control minds.

One of the largest necropolises in the world is home to a stunning array of historic Middle Eastern tombs.

The bluer than blue waters in these natural Israeli caves are reached via the world's steepest cable car.

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

America's silhouette includes 100 square miles of wilderness jutting into Canada thanks to an old mapmaking error.

Site of the golf match between James Bond and Goldfinger.