A land of debatable treasure.

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

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

Four hundred granite steps were built into this massive rock by the National Park Service.

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

The Zalud family experienced a number of tragedies in one decade, giving rise to rumors that the 19th century house is haunted.

Quite simply the largest tree in the world (by volume).

The second-largest giant sequoia in the world.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

San Francisco's newly reopened hands-on science museum.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A huge musical instrument played by the ocean.

A winding path built in secret on the edge of the continent.

A 300-ship graveyard, with a few still visible at low tide.

A hidden gem, named after a San Franciscan icon, offers spectacular views of the Pacific Ocean.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

This mausoleum is the final resting place of one of St. Louis's richest and most tragic families.

The first rural cemetery west of the Mississippi is home to the elaborate tombs of St. Louis' local beer barons.

One man's unrequited love stands in a glass box forever.

This replica of a Sarajevo fountain stands at the heart of the world’s largest Bosnian diaspora community.