For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

The oldest continuously operating fish market in the United States.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

Recorded as the first person buried in Arlington Cemetery.

A gift from Scotland to the United States in memory of the 270 lives lost when Pan Am Flight 103 exploded over Lockerbie due to a terrorist bombing.

The former home of the man whose radical ideas changed the nation.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

The tomb was guarded by soldiers from both sides of the war, and some left their initials carved in the brick.

The well-preserved remnants of a bridge that once made up a WW1-era military railroad.

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

The only place for a truly presidential dram.