A half-size replica of the World Trade Center towers above Tulsa.

Sid Vicious famously punched a hole in the wall of this iconic music venue.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

Decades before the scandal, this staircase on the river was a literal "water gate."

A nostalgic bibliographic gem.

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

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

One of the oldest Catholic churches in the U.S., situated just east of Gettysburg.

A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

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

Home to items never before seen by the public.

America's first federal monument.

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

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.