Medicinal spa created from the mineral-rich runoff of a geothermal power plant

This stunning concert hall has become a symbol of Iceland's national recovery.

This wrecked airplane has been sitting on a black sand beach since the 1970s.

An encyclopedic collection of mammal penises.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

Take a cruise with no movement but plenty of style in this one-of-a-kind boat mall.

Taoism, Buddhist and Confucianism are all represented in this temple that claims to answer anyone's wishes.

Leave a button on the jacket of this iconic Seattle clown.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

The heads of two giant mythological water horses honor Scotland's horselord past.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

Famously misunderstood wonder of the ancient world

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

A beach made of semi-precious green sand on the Big Island of Hawaiʻi.

An extraordinary mixture of natural beauty and man-made phenomena.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

One of the world's tallest, oldest, and most disgusting chocolate cascades.

A beautiful 62-acre Catholic shrine and botanical garden.

A bizarre roadside attraction and the first instance of miniature golf in the world.

America's only nuclear missile silo open to the public.

An extraordinary final resting place full of oversized art, amazing statues, and dead celebrities.