Once the supplier for noteworthy projects like the National Cathedral, this old brickworks now lies abandoned.

You could be standing at the site of one of D.C.'s most fatal tragedies and not even know it.

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

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

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

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

A much-maligned monument to teetotalism.

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

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

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

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

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.

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

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

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

The oldest continuously operating fish market in the United States.

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

The national park was once a plantation estate.

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

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

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

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

This grand gothic brewery has been pumping out suds for over a hundred years.