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

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

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

New York City's smallest piece of private property.

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

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

Elevated freight railway turned wildly successful urban park.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Visit the monolithic tomb of America's most famous general.

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

Ever wanted the laymen's version of your credit card fine print?