A rotating cast of guys and dolls in front of a Washington, D.C. building.

It was once the base for a series of domestic terror attacks.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

There’s a hidden military meme engraved on the World War II Memorial.

The most decorated dog of World War I is preserved in the Smithsonian.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

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

A nostalgic bibliographic gem.

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.

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

A painfully obvious spy house sits right across the street from the Russian Embassy.

The world's largest woodcarving collection includes dozens of Bible scenes and a wooden bestiary, all carved by one man.

Amateur taxidermy museum known for its large collection of white squirrels.

A stone marker memorializes the spot where the King broke up a street fight with a classic karate stance.

A fairytale art house in the middle of Wisconsin.

Eternal resting place of the grave robber and murderer who served as inspiration for many of cinema’s famous madmen.

Restaurant in Northern Wisconsin comes with a unique feature: a grassy roof covered in living goats.

More than 5,000 contemporary and "historic" mustards from around the world.

These molds for fiberglass statues have formed an eerie, accidental sculpture park.

This quirky museum has a collection of more than 15,000 bobblehead dolls.

The oldest certified bowling alley in the United States is in the basement of this century-old bar.

Statue dedicated to the star of an old television show.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

A place to eat for on-the-run agents and espionage enthusiasts.