This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

A giant toy jack made of numerous welded-together fire hydrants.

Three playfully immersive mini golf courses let you travel alongside your ball to the cup at this facility, which has been around since the 1950s.

This whimsical campus lawn is dotted with large sculpted numbers and hidden mathematical formulas.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

This cannon dating to 1755 has stood guard at this suburban intersection since 1915.

The Dover International Speedway is home to a towering, concrete-skinned, racecar-hungry behemoth.

The former locus of Boston's high culture has been shuttered and buried for over 70 years.

A street in front of NASA's D.C. headquarters has been named in honor of the Black women who were essential to early spaceflight.

Coins and medals straight from the mint await visitors to this shop in the nation's capital.

Outside the Department of Transportation, a collection of artifacts honors the history of how we get around.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

The early data processor factory founded in Washington for the 1890 U.S. Census went on to become IBM.

Behind an abandoned storefront is an example of pioneering 1930s gas station architecture.

A surprising, but overlooked example of geology in the middle of the nation’s capital.

Before founding the American Red Cross, Clara Barton had a tremendous humanitarian impact by locating thousands of missing soldiers.

Amid the sprawling Defense Intelligence Agency Headquarters is one of Washington's least accessible museums.

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

A diminutive plaque recalls the treetop sniper who almost killed Abe Lincoln.

This sandwich shop has a century-old elevator behind a sheet of plexiglass.

The world's oldest soul food restaurant is also one of its best.

The "lovely red Vega" of the legendary record-settling pilot.

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

A computer bug so primitive it was an actual insect.