Once disputed as the largest sundial in the world.

A 1930’s courtroom where John Dillinger and his gang went before a judge.

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

This rusted car found in Petrified Forest National Park's Route 66 exhibit may be the most photographed abandoned car in the country.

This church on a Tohono O'Odham reservation has stood since 1797.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

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

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

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

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

An urban laboratory.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

What is the Thing?

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

Limestone caves with spectacular showcase chambers.

This historic national park is covered in the stunning ruins of red rock pueblos.

See massive fossils that are over 200 million years old in northeastern Arizona.

A reproduction of earth's many biomes.

A sharp bend in a dramatic river canyon cut through red rocks.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Most-visited and most-photographed slot canyon in the American Southwest.