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

Fake subway tiles were installed to cover a design that resembled the Confederate flag—it's unclear if the resemblance was intentional.

Once a thriving business district, this former shopping area is now an urban ghost town in the heart of the city.

The last early 20th-century schoolhouse in Fairfax County has galvanized the community and engendered a spirit of service among residents.

A total of 14 men held the title of "president" before George Washington—their historical legacies are enshrined in the lobby of a hotel.

Once the largest trading firm of enslaved people in the U.S., this building is now a museum that preserves Alexandria's dark past.

This small pedestal marks the spot of the first lot of land sold in Alexandria, Virginia in 1749.

The former home of Thomson Francis Mason, the mayor of Alexandria from 1827-1830.

A striking memorial to the 21 lives lost in an explosion at the Washington Arsenal

US-50 in Nevada is known as "the Loneliest Road in America," but this earlier iteration of the route is even lonelier.

A small and somewhat hidden memorial to 68 local veterans of the Vietnam War.

A spectacular tribute to statesman and philanthropist Andrew Mellon.

The only public swimming pool in Baltimore open to Black Americans during segregation is now a permanent memorial art exhibit.

Built to defend Washington D.C. during the Civil War, this fort became a post-war nucleus for a thriving Black community.

This mighty white oak in Bethesda survived both the American Revolution and the construction of Washington D.C.'s metro red line.

The final resting place of the hero of Air Florida Flight 90 known as "the man in the water."

This marker at the entrance to the Humphreys Engineer Center honors the former Chief of the Army Corps of Engineers.

This monument is dedicated to those lost on June 6, 1944, in the town with that day’s highest per-capita casualty rate.

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

Home to items never before seen by the public.

A massive, majestic mammal watches over pedestrians from his perch atop a former B.P.O.E. lodge.

An original apothecary from 1792.

This pharmacist and his patient greet visitors to the National Community Pharmacists Association.