It may take some time to locate, but it's sure to warm even a heart of stone.

This tiny, tranquil Senegalese island serves as a powerful symbol of the Atlantic slave trade.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

A mysterious spirit totem at the edge of Navajo lands.

An artificial crater field that trained astronauts for lunar exploration.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

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

Don't blink or you'll miss it.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

All of the 20 occupied houses in this mostly abandoned town feature some curious display of junk art.

This golf ball–shaped former desert real estate office now houses a UFO museum.

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

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

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

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

A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.

Ancient pueblos built into the base of a natural canyon wall.

Limestone caves with spectacular showcase chambers.

A spiritual vortex among the red rocks in Sedona.

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

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.

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