This quiet park's strange sedimentary spires were named after Kodak's color film.

This sinkhole in the Arizona desert is filled with carbonated, arsenic-rich water

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

An excursion train traverses a picturesque red-rock canyon along the Verde River.

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 memorial includes fragments from one of the greatest tragedies in United States history.

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

A tribute to the statues of Easter Island along Route 66.

A stone pillar marking the location of the westernmost battle of the American Civil War only honors one side of the conflict.

This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

This unique competition celebrates an American Indian and Canadian First Nation cultural tradition.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

An unusual slot canyon in the Aztec/Navajo Sandstone has a cross-section like an inverted old-fashioned keyhole.

Nearly 300,000 acres of wildlife, natural splendor, and a hidden ghost town have been designated a national monument.

Religious statues built because of one man's bargain with God fill this peaceful sculpture garden.

An off-the-beaten path cave with an underground lake.

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

This old selenite mine is dotted with tiny crystals that make it shimmer like it's covered in glitter.

Hike the unusual hoodoos and rock formations that form this little-known natural wonder.