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

Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

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

The walls of the iconic dome are hollow and have a secret stairway.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

Home to items never before seen by the public.

One of the Treasury Building's original columns now sits as a garden monument in the middle of a busy military base.

France's national museum of scientific and industrial instruments.

A short distance from the Eiffel Tower is the final resting place of several of the city’s more well-known and interesting characters.

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

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

Long buried under the 20th-century landscape, this lift lock of the Alexandria Canal is the lone remnant of an ambitious early American transportation project.

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.

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.

Hidden in the forest atop a long, winding driveway is this stately home.

The only remaining African American schoolhouse in northern Virginia is now a museum dedicated to formerly enslaved people.

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

A piece of the Ludendorff Bridge, also known as Remagan Bridge, calls this military base home.

This 13-foot smiling peanut in Georgia helped Jimmy Carter win the 1976 presidential election.

The site of the notorious Camp Sumter Prison is now a peaceful memorial.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

The oldest family-run restaurant in the United States is a living museum of New Orleans dining history.