The land is home to swimming ponies and a legendary 18th-century treasure.

World War II-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers.

The Dover International Speedway is home to a towering, concrete-skinned, racecar-hungry behemoth.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

America's most famous piece of self-built architecture.

A museum dedicated to the alleged Roswell Incident.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

A field of nothing but boulders which resembles a giant's gravel driveway.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

One of California's oldest continually used high schools has an interesting history, both on and off screen.

The ghostly remains of an accidental sea.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

Hike amid the palm trees that thrive among Southern California's Indio Hills.

A 250 million-year-old rock formation has earned a rather unique nickname.

An Irish Memorial commemorating those who perished due to potato blight.

Yo, Adrian!

The world’s first penitentiary, meant to be humane, drove men insane.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

A layered tribute to the work of mosaicist Isaiah Zagar.

Dr Barnes' $25 billion private collection of art and arboretum.

The first American department store, and home to the largest operating musical instrument in the world.

This elaborate towering structure was once famed for its revolutionary height.