In Coyoacán, a pair of coyotes crown a public fountain in reference to the ancient Aztec name of the borough.

The ruins of the bathhouse used by the ill-fated last Aztec emperor still lie in Chapultepec Park.

An airy Art Deco space devoted to the weird and wonderful folk art traditions of Mexico.

Created as a "model concentration camp" to hide Nazi atrocities from the international community, this former camp-ghetto now holds a museum and memorial honoring the lives lost within.

This hanging crocodile is thought to be the "dragon" that once plagued a Czech city.

A peculiar clock commemorates a historic victory won by ringing the noonday bell an hour early.

Europe's second largest ossuary wasn't discovered until 2001.

This automated sculpture of two men peeing will spell out text messages with their micturition.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

This unattributed sculpture in Amsterdam is hiding in plain sight.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

Monument to a suicide protesting the Soviet invasion.

Frida Kahlo's childhood home, now a museum of her life and works.

This former industrial site has transformed into a community sculpture garden that hosts monthly Full Moon parties.

A Wisconsin kitsch palace from the 1930s lives its second life in 21st-century Brooklyn.

New York City's only radical feminist independent bookstore.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

Small and slightly hidden, the American Writers Museum is preserving the legacy of America's finest authors.

Rifle through images of skyscrapers, Worlds Fairs, and more in the largest public postcard repository in America.

To find the "unicorns of the deep" you've got to go downstairs.