A strangely angled West Village home is the only monument to an explosion that took the lives of three American revolutionaries.

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

The site of the deadly Triangle Shirtwaist Factory Fire.

An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.

Remnants of a wall built to separate Black residents of Hall's Hill from a newly built subdivision are a grim reminder of segregation in 20th-century Virginia.

Though his role as the inventor of baseball may be up for debate, fans still festoon Doubleday's grave with baseballs.

Recorded as the first person buried in Arlington Cemetery.

The controversial urban planner who designed Washington, D.C., was buried in Maryland, and can presently be found in Virginia.

This local mascot has been a presence in the area since the 1960s.

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

This monument traces the segregation line that inspired the first rural branch of the NAACP.

This eye-catching sculpture of rural life seems a bit out of place at a suburban intersection in front of a car dealership.

These figures float and flutter in this fountain crafted by famed Swedish sculptor Carl Milles.

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

This grove was planted more than a century ago by the War Mothers of World War I.

A 17th-century bezoar, dirt from an infamous site, and other curios decorate this unusual bar.

Concerned residents saved this historic house and garden from demolition.

A painfully obvious spy house sits right across the street from the Russian Embassy.

Cold War intelligence agents monitored communist embassies from an attic in a former pigeon coop.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

Three abandoned missile silos are hiding in plain sight behind a suburban development in Maryland.

A military museum and library dedicated to the citizen soldier.

A bronze monument to the infamous radio broadcast in the real New Jersey town where the fictional Martians crash-landed.

The only museum and archive west of the Mississippi that is dedicated to the study of Abraham Lincoln.