The national park was once a plantation estate.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

There’s a hidden military meme engraved on the World War II Memorial.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

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

Home to items never before seen by the public.

The site of the climactic scene from the classic horror film is now a historic landmark.

These unusual rooms on wheels are holdovers from the 1960s.

This beautiful vintage movie palace has seen little change in form or function since the 1920s.

A genuine Tudor manor transported piece by piece from England.

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

Extraordinary objects lurk in this quintessential regional museum.

The romance of early commercial flight still fills this Art Deco destination.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

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

Scenic mount trashmore, Virginia Beach's most curious waterfront still has a couple of secrets.

A former major munitions plant that has been converted into a sprawling art space.

An enormous warehouse filled with parade floats collected from over 50 years of patriotic celebrations.

The taxidermy remains of the most popular pony in children's literature.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

Volcanic stone sentinels stand watch at a Korean Bell Garden in Virginia.