Once a thriving business district, this former shopping area is now an urban ghost town in the heart of the city.

An isolated island home to one of the oldest English-speaking communities in the region and Maryland's state dessert.

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

Ship skeletons haunt Baltimore's waterways.

This English-inspired Maryland garden is home to acres of opulent plant life including bushes shaped into an entire fox hunt.

Bizarre Cavern.

A hidden alley in urban Baltimore is a haven for graffiti artists.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

The house where a Danish physicist discovered the connection between electricity and magnetism.

A rancher expanding a natural spring for his cattle came up with bones – lots and lots of them.

This replica small town lets visitors take a stroll through the story of progress in the U.S. via thousands of Americana artifacts.

The largest collection of historical roller skates in the world.

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

San Diego's most historic and haunted home.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

Take a dip in the world's largest mineral hot springs pool.

This super steep hike ascends 2,000 feet in less than a mile.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

The largest self-built castle in the U.S., six decades in the making.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.