Even Henry David Thoreau found this glacial pothole irresistible.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

Explore 10 acres of environmental sculptures.

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

A 90-year-old underground water reservoir offers a more industrial kind of tranquility.

The longest living non-clonal organisms on Earth.

These aggressively sustainable art homes look like something out of 1970's science fiction.

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

A stealthy Apache hideaway that became the haunting site of a mass grave.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

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

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

An obscure waterfall that looks like something out of a fantasy novel.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

The Grand Canyon of Texas.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

More than five miles of underground passageways.

One man's ambition created this psychedelic log home.

Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

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

A popular swimming hole that hides one of America's most deadly diving spots.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.