Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.

An American flag was erected for every day that passed during the Iranian Hostage Crisis.

Check out the 125-pound chocolate reindeer in the back of this candy shop.

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.

Where the oil industry began.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

"Where the ducks walk on fish."

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

Yo, Adrian!

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

This building at the south end of the boardwalk was once home to the U.S. Life-Saving Service and the U.S. Coast Guard before being rescued itself.

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

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

The last remains of one of the oldest and largest oak trees in the United States calls this state park home.

This vintage short line in Amish country runs passenger steam train excursions and still hauls freight.

A comprehensive collection of toy and model trains, largely from the mid-20th century.

Don't get it twisted: This is the oldest pretzel bakery in the United States.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

A gift from Japan, 17th-century lantern stands among the cherry trees at D.C.'s Tidal Basin.

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.

An overlooked memorial honoring the local Washington residents who died in World War I.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.