The only bridge in the United States where BASE jumping is legal without a permit year-round.

Home to the deepest rift anywhere on Earth.

Supposedly Satanic numbers adorn this preserved submarine sail.

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.

A legal loophole makes it possible to get away with murder within this 50-square-mile section of Yellowstone.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

The first declared National Monument in the United States.

Just a man taking his prehistoric pet for a stroll.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

A giant chess set, minus the psychedelic drug trip.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

The oldest arched-covered bridge in Virginia has truly withstood the test of time.

Thousands of tiny squares in different colors make up this piece of street art.

Yo, Adrian!

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

This elaborate towering structure was once famed for its revolutionary height.

A layered tribute to the work of mosaicist Isaiah Zagar.

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.

The site of the one and only battle of Lord Dunmore's War.