The former home of Dr. E.B. Henderson, also known as the "Father of Black Basketball."

A superbly preserved example of Georgian residential architecture that was once home to one of the founders of Alexandria, Virginia.

Named for a Greek oracle that interpreted the words of Zeus, this beautifully-restored manor home was once home to the architect of the Marshall Plan.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

A huge musical instrument played by the ocean.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A psychedelic labyrinth on the San Francisco bay.

The U.S. government built the million-pound stack of steel during the Space Race.

Explore the legends surrounding these mythical sea creatures inside this museum.

This building at the south end of the boardwalk was once home to the U.S. Life-Saving Service and the U.S. Coast Guard before being rescued itself.

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

The smallest covered bridge in Maryland.

This bell is one of the last remnants of the lost city of Triadelphia.

Washed out by the Johnstown Flood in 1889, the surviving portion of the original two-span bridge now resides at Fishing Creek.

First built around 1848, this bridge was destroyed by arson, but original timbers are included in the replacement.

A massive white oak tree provides a beautiful canopy near a suburban shopping center and stood before the signing of the Constitution.

This suburban park recalls the history of a famous tavern. Despite the name, it's no ordinary place!

This Georgian-style house built in 1746 is the oldest surviving structure in Bladensburg.

Home to two notable early-20th-century Black educators, Lucy Slowe and Mary Burrill.

This historic boathouse was constructed using salvaged lumber from burned barns.

The oldest house in Washington, D.C. wasn't originally constructed in the nation's capital.

An echo chamber with a waterfall wrapped around its base at the Embassy of Canada in Washington, D.C.

Once a sewer culvert, this road tunnel now offers cyclists and pedestrians a subterranean stroll under the C&O Canal.

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