This large sculpture of white plates and forms is actually a huge sound amplifier.

A unique collection of Swiss art brut and naïve art displayed in an old warehouse.

This colossal couch is an unlikely monument to Europe's first female Doctor of Law.

One of the world's largest collections of pharmaceutical artifacts.

The World Wide Web was created in this nondescript corridor at CERN.

The last woman executed for witchcraft in Europe is remembered in this Swiss museum.

The final resting place for the remains of 143 Habsburg royalty.

A Viking-themed bar in a canal town for those retreating from the hustle and bustle of Shanghai.

An out-of-place slice of France, smack in the middle of Shanghai.

A hidden bar inside an ad agency has a deliberately misleading name, so employees can stay late under pretext of paperwork.

The famous facade of Grand Central Terminal hides a regulation tennis court, and it's not the first one.

The 28-foot granite map plots the locations of 40 theaters in New York City.

Piano-making empire filled with 200-year-old steam machines still churning out 1,000 instruments a year.

Read a book next to a Midtown waterfall.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.