The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

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

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

Stairs often replace streets on the steep slopes of this old mining town.

An overgrown collection of miniature buildings still stand as evidence of one couple's obsession with The King.

Paranormal investigators claim this abandoned asylum is the most haunted spot in the eastern U.S.

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

A famed artist's inspiring work of peace and tolerance.

A historic casino where Dostoyevsky is said to have lost it all on a single spin of the roulette wheel.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

This tremendous timepiece was once the largest cuckoo clock in the world.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

Berkeley Hot Springs presents to you "the only outdoor monument to presidential bathing."

This train station inspired the name of a 1970's rock band and provided the backdrop for their album cover.

Hear, smell, see, taste, and touch history at this immersive Civil War hospital.

This pre-Revolutionary War grist mill ground corn and flour for soldiers in seven American wars.

Little has changed in the way that this mill operates since the 18th-century.

This statue of two men in a rowboat was erected to honor those who died while fishing in the Chesapeake Bay.

The national park was once a plantation estate.

The romance of early commercial flight still fills this Art Deco destination.

This grave marks the passing of a historic Jane Doe whose identity remains a mystery to this day.

A former major munitions plant that has been converted into a sprawling art space.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

The secret city built by the Manhattan Project.