A quiet and contemplative oasis in the middle of New York's bustle and riot.

An artist's cute bronze subway sculptures belie his violent artistic past.

Make a tough dinner decision: Octopus wasabi roulette or bull penis?

Lie in a hammock where George Washington stood.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

Mysterious 500-year-old tapestries depict a unicorn hunt.

One of only two commuter aerial tramways in the United States.

A terrific purveyor of natural history objects and curios.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

The ruined remains of the airport Claus von Stauffenberg departed in his failed attempt to kill Adolf Hitler.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

What was once an underground Nazi city is now Europe's largest bat reserve.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

This artificial cave looks like something out of a fairytale.

An ornate plague column – built to celebrate life – claimed the lives of numerous artisans during its construction.

Tiny communists hammer away on the Olomouc Astronomical Clock.

Massive installation of Europe's negative stereotypes.

The deepest sinkhole in Central Europe comes with a grisly tale and an unusual nickname: “The Stepmother Abyss.”

Crammed inside this grounded passenger plane is a bar that was once a Communist hang out and is now a ratty relic.

Underneath the city that invented pilsners are a series of historic tunnels that have been storing beer for centuries.

Unique house covered in a nightmarish mural of demons, ghosts and monsters.

A spiral staircase twists to the top of this unusual Czech lookout tower.

Thirty creepy ghosts now inhabit this decaying 14th-century church.

This network of conjoined cellars was riddled with traps and supposedly allowed the townspeople to pretend their homes were deserted.