Macabre astrological automaton clock dating to the late 1400s.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

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

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

1513 Turkish world map, full of European state secrets and snarky commentary.

A marvel of Byzantine engineering under the streets of Istanbul.

A Nesting Doll of Churches.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

A terrific purveyor of natural history objects and curios.

The most confusing clock in New York.

Elevated freight railway turned wildly successful urban park.

A semi-scholarly approach to sex.

The very first subway station in New York City is beautiful, decked out in chandeliers, and ... abandoned?

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

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

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Try not to get slimed in Tribeca.

The competition: breathe deeply as long as you can.

Slyly buy a shake in the Parker Meridien lobby.

Salute the leader of the proletariat.

Avoid gangster interaction while window-shopping.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

“Invented in Key West, Perfected in Brooklyn."