Launch site for nuclear war against Western Europe.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

3,000 market stands in five former Zeppelin hangars.

This geothermal hot spring hides beneath a slowly growing mineral dome.

This abandoned secret city is a crumbling wonderland of Soviet ruins.

A black cat protests the City Guild in Riga's Old Town.

Flamboyant architecture from the turn of 20th century.

This small Estonian hill is covered in hand-made twig crosses that are said to bring good luck.

A decommissioned submarine base makes a great space for graffiti art.

A subterranean house of worship carved right out of the bedrock.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

The highest bridge in America was built for an almost unnervingly small amount of money.

The largest source of fossilized insects anywhere.

Once an unstoppable source of gold and silver, this town came to a grinding stop when the groundwater proved deadly.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

A museum dedicated to the alleged Roswell Incident.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Giant heads occasionally litter the industrial Houston neighborhood where sculptor David Adickes has his studio.

A modernist landscape of water and sci-fi concrete.

The location along the shores of the Great Salt Lake of what was once called, "The Coney Island of the West", now sits barren due to arson and time.

Largest man-made excavation on earth!

Visitors to this library are in for a real-world education in modernist architecture.

A shady solar power system that couldn't hold up to the harsh desert conditions.