This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

World's largest collection of serial killer artwork and other macabre exhibits.

The blinking light atop the iconic landmark has been sending secret messages for decades.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

More than 25 fully functional scale replicas of famous lighthouses dot the shores of Lake Havasu.

This huge dam across the Colorado River caused an armed standoff between two U.S. states.

An assortment of armored tanks and Howitzer cannons in the middle of the Sonoran Desert.

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

One of the oldest Mexican restaurants in the United States air-dries its trademark beef in a dangling outdoor cage.

The world's largest military aircraft cemetery.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

The biggest solar telescope in the world helps reveal the secrets of our sun.

Artifacts from a battleship sunk at Pearl Harbor displayed in the Capitol building of its namesake.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

In this small Phoenix taxidermy emporium, you can find everything from a squid in a jar to a freeze-dried toad.

This small, unassuming street is now a canvas for color and creativity.

A self-built castle made by a mysterious man.

A mysterious "wedding cake" castle in the middle of the urban desert.

A museum and tribute to a brave profession.

The unusual burial monument of Arizona's first governor.

The exit of the largest prisoner-of-war escape attempt on American soil during World War II.

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