The largest man-made crater in the U.S. marks the spot where we once tested mining with nukes.

A facility built in 1992 for an underground nuclear test remains in place today.

On October 26, 1963, a 12-kiloton nuclear device was detonated here in granite some 1,211 feet below the ground surface.

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

The contents of this safe survived a 37-kiloton nuclear bomb.

From Japan to Italy, this California park explores the world's cultures through their gardens.

Over one million bird-related artifacts await.

An eccentric home stands out in an otherwise average neighborhood with mosaics, mini topiaries, and kinetic sculpture.

The precious-metals strikes dating back to the 1860s are now mostly inactive, but this area has become the United States' only domestic source of lithium.

This abandoned bootleg attraction was built to cash in on the popularity of classic TV show, F Troop.

A historic hydroelectric power plant serves as the unusual backdrop for a public park.

An early 20th-century jail not far from the infamous Tombstone, Arizona.

A unique collection of artistic rides

One of the best-preserved ghost towns in Arizona speaks to the difficulties of establishing mining towns in the 19th century American West.

The damming of the Colorado River buried an iconic geologic formation before record-breaking drought brought it back.

The site of a popular piano lounge owned by a former world champion boxer is now a place to rent a truck.

Two geoglyphs that are truly unique to North America.

A giant mascot, a car bomb, and the mafia mingle in the history of a defunct restaurant chain.

Petroglyphs, bird watching, and a 100-year-old Ranch in one location.

The Jewish section of the famous Boothill Graveyard was abandoned for nearly 100 years.

One of the largest open-pit copper mining operations in the entire country.

This collection of vintage signs reflects the long and colorful history of this Arizona town.

Some 10,000 works of ancient rock art cover these volcanic basalt outcrops near the Gila River.

Giant telescope mirrors built in a spinning furnace under a college football stadium.