Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

A museum befitting the city responsible for supplying the majority of the world's LSD.

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

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

See massive fossils that are over 200 million years old in northeastern Arizona.

Dramatic river bend surrounds a natural red-rocked pedestal.

Rippling sand dunes frozen in the Arizona rock.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Scattered around Atlanta are little doors with big charm.

A colorful square marks the heart of the city's LGBTQ community.

A white oak with property rights.

A curious whirlpool formation supposedly capable of entangling or engulfing branches, tree trunks, or whole rafts full of hapless tourists.

Bad farming practices caused this unnatural natural wonder.

All of Chicago's wood-paved streets are long gone but two alleys remain.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

This suburban house is made of dirt, and almost sparked a revolution in home construction.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

The 320-year-old tree that greeted General Lafayette and rerouted an interstate highway.

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.

The land is home to swimming ponies and a legendary 18th-century treasure.

The red brick house where the father of rock 'n' roll wrote some of his classic hits.

Community bookshelf of 25-foot-tall book spines.

This crumbling stump is all that remains of what was once thought to be the oldest living organism.

The farthest you can be in the contiguous U.S. from a McDonald's location.