The largest permanent Monopoly board makes one of the longest games even bigger.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

The steepest classic funicular in the world glides along a dizzying incline.

Travelers leave tea kettles in a remote part of Death Valley as part of a mysterious, decades-old tradition.

This golf ball–shaped former desert real estate office now houses a UFO museum.

This spectacular track has run continuously since 1882.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

This frequently-photographed waterfall takes only a short hike to visit.

Walk in the footsteps of the gods and straddle two tectonic plates.

A motel dedicated to Southwestern nostalgia.

The show's fictional Korean medical camp was created in the Santa Monica hills.

A life-sized mammoth sculpture marks the spot where the remains of a Columbian mammoth were discovered in 2005.

An Australian lake whose pink hue defies scientific explanation.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

A beautiful geyser under environmental threat.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

A student driver's nightmare.

The largest self-built castle in the U.S., six decades in the making.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Canyon walls shrouded in ferns.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.