This abandoned fighter jet launch center is now a haunting street racing course.

The labyrinthine home of the National Archives of Estonia is an experimental blend of architecture, art, and history.

Wars fought and wars won are remembered by these abandoned bunker ruins.

A trio of giant wooden megaphones turn up nature's volume in this Estonian forest.

The gutted remains of this Estonian mansion are a monument to a tragic love.

This disappearing geyser has been attributed to witchcraft, but really it's all about rainfall.

This stoic bronze soldier stands as a symbol of Russian sacrifice or Soviet oppression, or maybe both.

This dizzying tower was built to better broadcast the 1980 Moscow Olympics.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

This star-shaped military outpost is now simply trying to protect itself from neglect.

Remote, beautiful, and stigmatized, Las Hurdes is Spain's version of Appalachia.

You can cross from one country to another in a single hop on this little bridge.

Two nations form a rare four-sided border at the peak of a mountain, philosophical questions result.

An American city stranded at the tip of a Canadian peninsula where strict adherence to the "49th parallel rule" became problematic.

A piece of India inside a piece of Bangladesh inside a piece of India inside a piece of Bangladesh.

This peculiar border irregularity is the only way to legally enter Russia without a visa.

The northernmost international land border crossing in the United States.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

An abandoned airport in the middle of nowhere.

An eerie collection of the surviving structures from a past celebration of the future.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

A micro-communist utopia in Spain with no police, no mortgages and full employment.

A five-square-mile slice of Spain on the Mediterranean coast of North Africa.

A railway bridge leading nowhere stands lonely in the middle of a meadow.