The footprint of a frustrated devil in Munich's Cathedral.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Destroyed numerous times, this centuries-old bridge has always been rebuilt with its original design.

Go inside to really appreciate this 500-year-old technological masterpiece.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

A temporary art piece to celebrate LGBTQ Pride is now a permanent part of Stockholm's traffic landscape.

This statue and park honor the Swedish chemist Jacob Berzelius, one of the founders of modern chemistry.

The scars of a remarkably organized public protest to save 13 elm trees are still visible in this Stockholm park.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

The final resting place of the man whose name has become synonymous with greatness.

Twice a year, this floating library delivers thousands of books to the remote islands of Stockholm’s archipelago.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

Roughly 17 million letters to Santa have found their way to this Arctic Circle post office.

An abstract monument to a symphonic composer.

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

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

A hand-built folk art installation covered with messages of God's love.

Burping, gurgling geothermal mud pots by the Salton Sea.

Huge otherworldly domed rocks on the shore of a deadly lake.

This dormant volcanic crater has been converted from a roiling pit of magma to a pleasant hiking spot.

A pair of large white marble lions guard this stretch of the Mojave Desert, and it is utterly mysterious how they got there.

The ghost town that ended up on Ebay.

It is locally loved and ridiculed for literally looking like poop.

This restaurant's marvelous musical machines include a self-playing violin.