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

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

While knives are the main feature in this store, visitors will also find dinosaur bones and meteorites.

A unique collection of artistic rides

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

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

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

A spiritual vortex among the red rocks in Sedona.

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

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

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

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

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

Dramatic river bend surrounds a natural red-rocked pedestal.

A mysterious spirit totem at the edge of Navajo lands.

The eroded core of an ancient volcano is now accessible by a short hike.

The cinder cone volcano with a less than complimentary name.

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

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.