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

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.

In which a local geological marvel becomes a quaint roadside attraction.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

A remarkably well preserved tower dating all the way back to the Iron Age.

D.C. once had its own tiny rival to the New York Stock Exchange.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.

Eco-friendly island mansion.

This Rhode Island mansion was a stand-in for the exteriors of Collinwood in the original "Dark Shadows" series.

Oldest synagogue in the United States.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

The second oldest Jewish graveyard in the U.S. is tiny, with connections to George Washington and Henry Wadsworth Longfellow.

Last residence of H.P. Lovecraft featured in his story "The Haunter of the Dark."

An architectural statement of artistic intent smack in the middle of Providence, Rhode Island's Colonial uniformity.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

Ironically this massive termite is the mascot for a company that is acclaimed for killing his kind.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

The tunnel under the Capitol Building where Congress takes out its trash.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.

The Pentagon sits on a former island that was in Virginia at low tide and D.C. at high tide.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

A statue of the English poet for whom this Delaware town is named is ritually dressed in seasonally appropriate clothing.