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

A priceless collection of the Nation's cryptologic history.

Helen Keller once broke ground on this historic center for the study of technologies to benefit the hearing impaired.

Look closely and you’ll notice that the color changes a third of the way up the tower.

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

This stately mansion, built in 1787 by America's first Secretary of the Navy, is rumored to be one of the most haunted buildings in Washington, DC.

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

These recently uncovered walls are all that's left of Washington, D.C's first defense contractor.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

A rotating cast of guys and dolls in front of a Washington, D.C. building.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

A painfully obvious spy house sits right across the street from the Russian Embassy.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

Replica of an old Esso filling station, complete with Wayne gravity pump and outhouse.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

A riverside park built around the ruins of a massive dam that collapsed in 1909.

This massive roadside mascot was the first version of the giant to illustrate his butt.

A factory in Milwaukee where poop is reclaimed… and recycled.

Meet the "Green Monster" of Monico, Wisconsin.

A bronze plaque marks the site of the only show the "King of the Soul Singers" ever missed.

A museum celebrating the self-taught artist-environment builder.

A curious sculpture garden and museum in Cochrane, Wisconsin.