This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

A semi-scholarly approach to sex.

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

A sobering account of the vibrant multicultural neighborhood that was destroyed under apartheid.

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

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

This artificial cave looks like something out of a fairytale.

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

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

This pirate-broadcasting-tower-turned-restaurant played a rebellious role in the history of Dutch television.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

Amsterdam's former hotspot for public executions and dissections.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

Cat art as far as the eye can see.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

The highest rapid transit station in the world.

One of the largest public housing complexes in New York once visited by Eleanor Roosevelt.

Neoclassical bank designed by NY architects Helmle & Huberty.