Abandoned bridge hidden deep in the San Gabriel Mountains.

A picture-perfect town, perfect for blowing up.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

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

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

Explore 10 acres of environmental sculptures.

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.

An acoustic anomaly with a mysterious cause.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

A strange house built only at night, with rumored mystic inspiration.

The ghostly remains of an accidental sea.

A hand-built folk art installation covered with messages of God's love.

Home to items never before seen by the public.

Try not to get slimed in Tribeca.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

Most-visited and most-photographed slot canyon in the American Southwest.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

Rippling sand dunes frozen in the Arizona rock.