Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

NASA's leading space science lab started by a co-founder with deep ties to the occult.

Bug-devouring flora are the stars of a special wing of the glass conservatory.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

The diverse and sometimes odd cultural heritage of the Golden State is collected, examined, and displayed in this proud museum.

An extraordinary final resting place full of oversized art, amazing statues, and dead celebrities.

A visionary, futuristic sculpture in Los Angeles that never met its extraterrestrial potential.

This ultra-modern home clings to the slope of the Hollywood Hills on a precarious stilt.

World-famous, Pink's still manages to keep its prized cult fetish status.

Medical and zoological curiosities for sale.

Stroll the grounds built by murder, suicide, and dirty oil money at one of Hollywood's most filmed mansions.

Home to secret Eastern Bloc spy equipment and the largest stretch of the original Berlin Wall outside of Germany.

A free library to stumble across, one of many placed worldwide if you know where to look.

An artificial crater field that trained astronauts for lunar exploration.

One of the world's largest telescopes, stares into the night sky with two huge mirrors.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

Ancient pueblos built into the base of a natural canyon wall.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

This historic national park is covered in the stunning ruins of red rock pueblos.