These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

This ancient sinkhole-turned-healing-pool is a treasure trove of archeological discoveries and may even be the Fountain of Youth.

A grove of colossal man-made flowers built to collect the sun's rays.

An institution that preserves the history of institutionalization.

A park full of outsider art, created by college students studying outsider art.

Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

This maze-like slot canyon is a unique gem within an already fascinating geological area.

Exact replica of the ancient monument, but much, much lighter.

Only known mainland rookery of the threatened Stellar sea lion.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

Lie in a hammock where George Washington stood.

100-year-old shipwreck you can walk up to at low tide.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

Friction between grains of sand cause a curious "singing" sound.

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

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

A bigger-than-life pun that has become a beacon of altruism.

The only Bahá'í house of worship in North America and one of only a handful worldwide.