The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

Most comprehensive museum in America devoted to one ethnic group.

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

An eight-sided home built during a brief octagon craze in the 1850s.

This Virginia town has been famous for its fried chicken since the 19th century.

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

This collection of over 50 classic pinball machines awaits visitors to downtown Roanoke.

America's first federal monument.

The only recreation of William Shakespeare's indoor playhouse.

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

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

Parking garage where Bob Woodward met Watergate source "Deep Throat."

Exact replica of the ancient monument, but much, much lighter.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

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

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

After his presidency, George Washington planned to live only a few blocks from the Capitol building.

A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

They sort through millions of dollars worth of diplomatic gifts on behalf of the government.

A historic ruin just 20 feet away from a busy highway onramp.

Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.