The first Protestant church in Arizona and only Gothic Revival style adobe church in the world.

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

The lobby of this hotel near the U.S.-Mexico border features a stained-glass mural that measures 42 feet long and 6 feet tall.

In 1975, a forestry worker in Arizona claimed to have been abducted by a UFO.

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

These petroglyphs created by ancient Arizonians have withstood centuries of exposure to the elements.

Previously a hot spring, this park remains a site of unique history, wildlife, and geology.

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

The remains of a boarding school designed to forcibly assimilate Native American children.

More than a century old, this trading post resides in the Navajo Nation.

This once-booming Gold Rush town is now home to a herd of feral donkeys.

Two geoglyphs that are truly unique to North America.

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

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

Visitors to this public park will also find the ruins of an old western fort.

The first steel dam in the world and the only one still functional in the United States.

This small interfaith chapel lies not far from the rim of the Grand Canyon.

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

This Native American settlement dates back to the Pueblo II period.

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.

A rare wayfinding portmanteau of “Street” and “Avenue.”

A strenuous, unofficial trail leads to spectacular views in one of America's most remote national monuments.

Arizona's first government hub is a rustic cabin now preserved as part of a historical museum.

A towering bronze statue memorializes the founding father of postwar American conservatism.