There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

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.

This monument is dedicated to those lost on June 6, 1944, in the town with that day’s highest per-capita casualty rate.

This former Cold War missile control site played an important role in the creation of GPS.

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

A lone historical marker off the highway and scattered debris are all that remain of this Cold War-era missile site.

A whopping 14,000 copper coins cover this miniature fighter jet.

This museum sits on the site of a decommissioned military communications base.

America's first federal monument.

An out-of-place Air Force radar dome is all that denotes this park as a former missile launch site.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

The Virginia farm where John Wilkes Booth met his grisly end is now largely forgotten.

An extensive, if one-sided, history of U.S. law enforcement's war on drugs.

One street divides a single town that stands in two U.S. states.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

A secretive collection featuring objects that were designed specifically for U.S. intelligence operations.

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

The "last holdout of the Confederacy” actually sat at the edge of the Canadian border.

This magnificent mural was created with over 30,000 colored bricks.

The once-a-day siren is a reminder of the days before time was standardized.