Two gushing waterfalls of hot spring water within a block of each other.

The only diamond mine in the world where you can keep what you find.

Foragers once flocked to this big beautiful bayou to hunt for pearls.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

The world-record holder for the longest bridge stretching continuously over water.

This coastal port saw one of the most significant battles of the Civil War.

FDR hoped to find a cure for polio in this Georgia town's warm springs.

A memorial to the unknown and unheralded men and women of the Cold War military and intelligence services.

These markers are used to document elevation changes around the famed dam.

A Saint Nicholas-themed ghost town in the Mojave desert.

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

A water tower shaped like a giant coffee pot looms over a small Swedish village in Central California.

The second-largest giant sequoia in the world.

This small piece of railroad history sits behind the parking lot of a chain grocery store.

A roadside attraction filled with an astounding array of gloriously wacky vehicles.

The scene of one of the darkest moments in American labor history has been left essentially untouched since the tragedy.

The 7,000-foot finish line of America’s first Olympic Trials marathon.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

This constitutionally sound Muffler Man harkens back to the days these attractions were a must-see.

The old Route 66 town straddling Texas and New Mexico died along with the Main Street of America.

Two tall rocks sit at the center of this site, once the home of a large Ancestral Puebloan community.

Possibly the world's only drive-in movie theater with an attached motel.

The decaying ruins of a failed mining company’s water diversion project cling to the side of a desert canyon.

Two creeks flow out of either end of this canyon in opposite directions.