A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

An unusual ode to the late Irish playwright, complete with a squiggly bust and coffin-shaped bench.

These ornate arches show how the course of the River Thames has changed.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

This 18th-century sundial was designed to calculate the date of Easter each year.

Former hunting lodge of a duke who was an avid collector of impressionist works.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

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

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

A portal into the bricked up canal that runs through the heart of Washington D.C.

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

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

‘Bush the old fire dog died of poison July 5th, 1869. RIP.’

This stately mansion, built in 1787 by America's first Secretary of the Navy, is rumored to be one of the most haunted buildings in Washington, DC.

Before Metro, Washington had a robust streetcar network—and you see the remains of this infrastructure if you know where to look.

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

Located at the former Lorton Prison the Lucy Burns Museum tells the story of the 91 year history of the prison including the dark chapter of its involvement in the women's suffrage movement.

A replica of the famous memorial statue at the Normandy American Cemetery hides in an office building in downtown D.C.

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

The tunnel under the Capitol Building where Congress takes out its trash.

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

The sculptor was instructed to add “stallion attributes” to the general's bronze mare.