Parking garage where Bob Woodward met Watergate source "Deep Throat."

This restaurant has been a haven for D.C.'s LGBTQ community since the 1950s.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

This unassuming passageway played a key role in one of the most important events in U.S. history.

A replica of the famous memorial statue at the Normandy American Cemetery hides in an office building in downtown D.C.

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

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.

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

This taxidermy horse was a Civil War hero.

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

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

Home to a vast and influential collection of Shakespeareana.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

Bowl in splendor, if you're lucky.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

A unique sculpture park that specializes in the huge and bizarre.

The fountains of the U.S. Navy Memorial are annually salted with water from the Seven Seas as part of a nautical ritual.

This nine-story building is the oldest standing skyscraper in D.C.

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

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

This Asheville chair museum wants to revive a dying art.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.