A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

Home to a vast and influential collection of Shakespeareana.

A historic arena where the Beatles played their first concert in the U.S.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

Washington's iconic carousel has a nice piece of Civil Rights history.

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

A much-maligned monument to teetotalism.

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

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

Go take a picture with the inventor of the daguerreotype photographic process.

The most accurate timepiece in the world.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

Perhaps the most scandalous statue of America's first president.

A celebrity from the late Cretaceous period.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

A super-sized promotional trick that is now a D.C. landmark.

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

The national park was once a plantation estate.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

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

Largest Roman Catholic church in North America.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.