The overgrown ruins of a once thriving World War I-era copper mine.

This dark, quiet forest on the outskirts of San Diego is dense with rumor and lore.

Explore the wide world of desert plants at this unique Palm Springs botanical garden.

At the western edge of Palm Springs, a rugged desert canyon trail leads to a waterfall at the base of the San Jacinto Mountains.

The world's first motel is now an administrative building for an apple farm.

This little gem of Spanish Colonial architecture has been abandoned since the 1950s.

Coastal dunes, site of buried Egyptian movie set and former utopian colony.

This restaurant has been a haven for D.C.'s LGBTQ community since the 1950s.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

Once home to the largest photo service in the United States.

This nine-story building is the oldest standing skyscraper in D.C.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

There’s a hidden military meme engraved on the World War II Memorial.

An overlooked memorial honoring the local Washington residents who died in World War I.

A tiny monument to the unsuccessful attempt by Thomas Jefferson to place the prime meridian in Washington.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

Also known as the Founding Church of Scientology.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

A much-maligned monument to teetotalism.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.