This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

The most powerful laboratory radiation source in the world pulses with 1,000 times the electricity of a lightning bolt.

The fictional star of "Breaking Bad" is memorialized with a real-life gravestone in his hometown.

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

The shattered remnants of a meteor that struck Santa Fe more than a billion years ago.

In the late 1990s, a mechanic and fan bought this iconic sportscar back from the dead.

A mass grave for victims of an airline disaster that led to much-needed safety improvements for commercial flights.

Locals call this magical moss-covered walkway the "Emerald Path."

A tiny replica of the iconic London landmark hides on the side of the steel structure.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

Michael Heizer's masterwork in the Nevada Basin.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

This small glass cube is a peaceful out-of-the-way sanctuary at the busy airport.

Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

The absurd creation is a compulsory destination for selfies in Buffalo.

This unique crypt designed by Frank Lloyd Wright for his longtime friend was not completed in either man's lifetime.

The seat of Buffalo government is a gorgeous Art Deco palace.

This restored house is like a time capsule of the president's unconventional inauguration.

Town full of spiritualists, some of whom are mediums, is still in full swing after 130 years.

The first and only American institution dedicated to the enduring value of comedy in the United States.

A quirky collection of outsider art made from automobile parts.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

Art in the form of a winding, man made crack in stone.