A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

Museum houses an impressive display of the origin and artistry from the now-quaint invention's history.

Step inside Lucy, the world's largest "elephant."

This quaint New Jersey graveyard is an eternal resting place for thousands of beloved pets.

World War II bunker still standing on the New Jersey beach.

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

Step back in time on this preserved 1800s farm.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Mile-long cave system near Great Smoky Mountains.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

The oddly shaped, steam-spewing building is now an art studio and gallery.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

This lovely pocket park is one of the most under appreciated in D.C.

There's a crumbling old mansion inside the Smithsonian National Zoo.

People escaping slavery may have hidden inside a corpse vault.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

A small triangle of DC grass is the final resting place of one of Sonny and Cher's songs.

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

The house where John Wilkes Booth conspired with his co-conspirators.

A nostalgic bibliographic gem.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.