Three abandoned missile silos are hiding in plain sight behind a suburban development in Maryland.

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones’ locker.

Once a thriving business district, this former shopping area is now an urban ghost town in the heart of the city.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

Ship skeletons haunt Baltimore's waterways.

The land is home to swimming ponies and a legendary 18th-century treasure.

Scene of the grisly murder of two Norwegian women in 1873.

Unique tower has outlasted a takeover of the company.

Eight rare Corvettes are swallowed up by a sinkhole in Kentucky's National Corvette Museum.

A theme park featuring a replica of Noah's Ark built to the measurements specified in the Bible.

Moonbows over Kentucky.

The world's longest known cave system.

This long unused shot tower on the Mississippi remains a point of pride for a small city in Iowa.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

The oldest operating hotel in Illinois enjoys a historic (and some say haunted) past.

The only Chicago bridgehouse open to the public contains a museum devoted to the Chicago River.

The owners of this Victorian-era estate say it’s still visited by the spirits of long-gone residents.

In 2004, a Dave Matthews Band tour bus dumped 800 pounds of waste off a bridge and onto an unsuspecting tour boat below.