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

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

A piece of the iconic wall found an unlikely new home in a Vegas bathroom.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

The abandoned train depot now doubles as a well-placed rest stop for those who take the road less traveled.

Don't blink or you'll miss it.

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

A secret fresh water spring for animals and humans alike hidden along the most famous road in the United States.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Once called the Jersey Lilly, this former saloon was the domain of infamous Judge Roy Bean.

A Prada store in the West Texas desert that is never open for business.

A little stop along the Texas highway where Rock Hudson, Elizabeth Taylor, and James Dean stayed while shooting the 1955 film "Giant."

This giant disembodied horse head seems to balance impossibly on its nose.

The residents of this ominous-sounding street in Pennsylvania liked its name so much they fought to keep it.

These unusual rooms on wheels are holdovers from the 1960s.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

Outdoor exhibits explore the contributions of European, African, and indigenous peoples to American frontier culture.

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.

The spectacular collection of one of the world's best woodcarvers.

Ohio's 19th-century communist micro-society.

Giant busts of 42 U.S. presidents sit, crumbling in a field in Virginia.

The Virginia farm where John Wilkes Booth met his grisly end is now largely forgotten.

The only National Monument ever to go missing for nearly 50 years then resurface in a dump.