The discovery site of the "Capitalsaurus," the official dinosaur of Washington, D.C.

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.

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

A fantastic array of trays and cables once whisked books over to the Capitol at 600 feet per minute.

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

The towering figures were created from the cemetery's fallen old-growth trees.

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

Obscure Freemasons still live in D.C.’s largest private residence.

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

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

This poor little statue is the most vandalized memorial in Washington.

Decades before the scandal, this staircase on the river was a literal "water gate."

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

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

The national park was once a plantation estate.

Housing the National Women's Party since 1929, this historic house is now a monument to the fight for gender equality.

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

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

When it opened during the final years of the embargo, all the drinks and cigars were free.

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

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

A wondrous old library overlooking the nation's capital.