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

Feel what it would have been like to live in Gettysburg during the pivotal Civil War battle.

This is the cabin from which John Brown and his men launched their fateful war to end slavery on October 16, 1859.

Go take a picture with the inventor of the daguerreotype photographic process.

A much-maligned monument to teetotalism.

Before founding the American Red Cross, Clara Barton had a tremendous humanitarian impact by locating thousands of missing soldiers.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

The Lincoln Memorial has inspired many, even though a word on the inscription appears to be spelled incorrectly.

This monument marks the beginning journey of a wounded soldier's leg that ended up almost two states away.

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

This stone polylith serves as both a 100+ year old experiment and monument to the history of science.

Established to give visitors a taste of Lee County’s natural bounty, this shop offers fresh fruit, soft-serve ice cream, and preserves.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

No one knows who painted this mysterious mural in a Penn State basement.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

The fastest transatlantic ocean liner sat abandoned in a Philadelphia shipyard for decades.

The world’s largest concentrated solar plant generates as many problems as megawatts.

Outside this souvenir shop is a statue of Bigfoot composed of volcanic ash, and plenty more to see inside.

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

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

During Prohibition, the U.S. Congress had an "official" bootlegger, with his own Capitol Hill office.

The story behind this beloved toy—named for Theodore Roosevelt and owned by his grandson—is more complicated than you might guess.

An echo chamber with a waterfall wrapped around its base at the Embassy of Canada in Washington, D.C.