Once the future of underwater combat, this old sub is now open for visitors to muck around in.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

Home to the deepest rift anywhere on Earth.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

Officially named the "Loneliest Road in America," this barren stretch of Nevada road offers almost nothing but sky and open fields.

Eastern zen meets Western grit in these four little trees growing out of a rock on Lake Tahoe’s Nevada shore.

The oldest U.S. Government building in California, and it's State Historic Landmark #1.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

Every Sunday, Bogotá turns 75 miles of its city streets into a bicycle superhighway.

A celebration of Colombia’s premier contemporary artist.

The colonial city's social history is reflected in its fanciful door knockers.

This Bogotá museum houses the world's largest collection of pre-Columbian gold relics.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

Georgetown’s most impressive building is also one of the tallest wooden churches in the world.

An alley covered with 20 years of bubble gum.

A deserted hodgepodge of experimental structures designed by nearby university students.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A collection cataloguing one of the most brutal dictatorships in modern history.