This four-story steel sphere in Maryland was used to test biological weapons.

Washed out by the Johnstown Flood in 1889, the surviving portion of the original two-span bridge now resides at Fishing Creek.

Once on display alongside a giant Gumby, it’s as tall as a nine-story building when fully extended.

Delicate Wurlitzers, creepy clowns, and The Noid all share space in this insane explosion of kitsch history.

The smallest covered bridge in Maryland.

This Maryland farm is known for its amazing corn mazes and its 30-foot junkbots.

Easter in Westminster may be the only time and place to behold Edgar Allen Poe made entirely of Marshmallow Peeps.

A Civil War Museum with some notable medical antiques.

Mysterious rocks that ring musically when struck.

A former plant in one of the hubs of U.S. steelmaking has been turned into this museum celebrating the history of American industry.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

A Yiddish theater turned movie house turned rock and roll landmark turned gay disco turned bank.

For almost a century, this East Village newsstand has served egg creams to beats, hippies, punks, and everything in between.

This nearly invisible wire transforms much of the city into one big, symbolic home on the holy day.

This outdoor gallery of sculptures along the East River was once a landfill.

One of the deadliest American air disasters is nearly forgotten in Brooklyn.

Thomas Edison's home and final resting place also boasts an impressive garage, where some of the earliest electric cars are on display.

Take a step into the workshop where Edison and his employees revolutionized the world.

The first car-centric shopping plaza in the U.S. brought a little bit of Spain to downtown Kansas City.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

This recently restored timepiece has stood all around Kansas City.

Some of the earliest burial grounds of New York State are to be found hidden away in this quaint town.