This railroad magnate's 19th century tower is more than a little bit out of place in the Nevada desert.

Right angles in the forests of Panama.

A pocket of jungle amidst urban expansion in Panama.

From a distance, Latin America's first Baha'i Temple looks like an enormous egg perched atop a hill.

The first permanent memorial to a unique secret weapon of World War II.

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

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

Founded by members of the Tohono O’odham Nation, this one-room joint's James Beard–winning fry bread is light as a cloud.

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

A partial tunnel blasted into a steep ridge is all that remains of a failed railway across Arizona.

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

Concrete crosses scattered across the Arizona scrubland which were used to align spy satellites.

This comprehensive collection features Native American artifacts dating back centuries.

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

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

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

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

A former department store turned into a quirky restaurant.

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.

This rustic cabin, outfitted with gun slits, was once home to John D. Tewksbury, patriarch of the bloodiest family feud in American history.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

A self-built castle made by a mysterious man.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

This collection of Wild West movie memorabilia also claims to hold some secrets of the Lost Dutchman's mine.