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

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

Experience a charming 1930s version of "infotainment."

Centuries of crashing waves carved out this small hole in the rock, which lights up at certain parts of the year.

Hidden in the Santa Ynez Mountains off Highway 154, this tiny restaurant once served as a stagecoach stop.

Here, visitors can swing with the waves of the Pacific Ocean.

Climb 200 stairs up the tallest lighthouse on the West Coast for an unbeatable view.

A poignant memorial to a young boy whose death spurred a dramatic increase in organ donations in Italy—dubbed the "Nicholas Effect."

A 19th-century cabin built into a hollowed-out Sequoia tree.

The first life claimed by this record-breaking peak wasn't lost to exposure or a fall, but rather lightning.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

A land of debatable treasure.

The most magnificent bottle house in a town strangely full of them.

A brothel nestled amongst ghost towns, with an abandoned plane wreck to greet you.

Naturally carbonated water fills the mineral baths at this 19th-century California resort.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

Canyon walls shrouded in ferns.

This massive redwood tree has a hole in the base big enough to drive through.

An optical illusion found amid a logged redwood forest.

This hidden gem along the Utah-Arizona border is truly worth the rugged journey.

This forgotten Frank Lloyd Wright house is an architectural marvel at the end of a sleepy residential street.

Instead of hoofing it up steep stairs, residents can hitch a ride on this private lift.

This collector's home is a constant work in progress.

A library of rare occult books in Los Angeles.