One of the most poignant ruins of the Chernobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

More gold than anywhere else, ever.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

Huge masonic hall in Philadelphia with lavishly themed rooms.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

Four-story slides send people whizzing through the math department at this Munich university.

Welcome to the world's only museum dedicated to the Ukranian Easter egg.

This strange building looks like a medieval fortress crashed into a 1960s Brutalist office block.

An ancient Viking village in North America that predates Columbus by 500 years.

An enormous steel waterfall is a nod to the substance that shaped Britain's Steel City.

Since World War II people have been decorating this stretch of the Yuma desert with signatures arranged out of rocks.

This magnificent stepwell is designed as an inverted temple and adorned with 1,500 sculptures.

Along the Palisades skyline are the ruins of a large mansion built in 1911 and demolished in the 1930s.

Turns out you can see the world without ever leaving Maine.

Hidden in the hills is a mysterious stone structure, known only to a few.

This professional clown's home is an outsider art wonderland.

One of these two land speed record-breaking vehicles went so fast it shattered the sound barrier.

This weeping, 10-foot-tall sculpture was a maquette for a 9/11 memorial.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

A former plague hospital turned medical museum.

This abandoned fishing settlement may well be the greenest village in the world.

A remarkable medieval structure born from a 14th-century disaster.

A collection of outdoor mystical statues paying homage to indigenous Australians and ecological stewardship.

A plaque commemorates the spot in the Oregon woods where the first-ever Geocache was hidden.