No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

Avoid gangster interaction while window-shopping.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

A popular European tradition makes its way to the states on one of America's most famous bridges.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

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

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

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.

Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.

A crumbling hospital from the 1850s on Roosevelt Island.

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

This mesmerizing kinetic sculpture blossoms endlessly in the breeze.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

The painter of "The Scream" is laid to rest under a stoic bust of himself in the humble corner of an Oslo cemetery.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

It houses the remains of a 17th-century version of the Titanic.