A subterranean house of worship carved right out of the bedrock.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

The only surviving piece of a submarine said to be the most decorated vessel in U.S. history.

Tacoma’s 25-foot coffee pot music spot has served up over 80 years of concrete kitsch.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

Native American burial mounds? Giant gopher dens? No one knows what created the Mima Mounds.

A bike being "eaten" by a tree is the real Vashon legend behind popular children's book, "Red Ranger Came Calling."

Stroll through a wonderland of stupendous moss-covered trees.

A natural history wunderkammer in the middle of the desert.

The world's largest military aircraft cemetery.

Despite a recent paint job, the factory still sits empty.

This church on a Tohono O'Odham reservation has stood since 1797.

This giant steer-skull edifice refuses to die.

America's only nuclear missile silo open to the public.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

This lonely gas station has stood at this location since 1917.

A huge communist-era propaganda monument and mural that offers stunning views of the Mongolian capital.

Enormous statue of the Emperor of the Mongols.

A collection of old steam and diesel locomotives sitting in a fenced-off garden.

A beloved tribute to the Fab Four and the freedoms they inspired.

This massive piece of aviation history calls this residential neighborhood home.

An exceptional assortment of fossils recovered from private collections.