One of the oldest surviving lock houses on the Ohio River.

A tribute to those that perished during the American Revolution.

The hometown of movie legend, military officer and All-American guy next door, honors this great actor.

These hooded graves are the only of their kind in the United States.

An industrial waste tourist attraction.

An imposing pair of sphinxes stand guard outside this Egyptian Revival tomb.

This 19th century machine put animals (including humans) in boxes to study how they metabolized calories.

Originally a cemetery, this city park remains speckled with a handful of scattered gravestones.

A former plant in one of the hubs of U.S. steelmaking has been turned into this museum celebrating the history of American industry.

The corporeal remains of Napoleon III's dentist rest under this 15-story obelisk.

A small granite block at this monument's base is the only part of Lincoln's Tomb outside of Illinois.

True to his word, George Swanson is buried in his white 1984 Corvette.

This decommissioned surface-to-surface missile resides outside the American Legion Post in Pennslyvania.

An unusual and eclectic collection of local historical memorabilia.

The aggressively banal name of this underground fortress of bureaucracy does little to evoke its truly surreal existence.

Francis Julius LeMoyne built this crematory in 1876; he was the third person to be cremated here.

The largest collection of Frazetta originals in the world.

This sculpture of a fisherman spent six years at the bottom of the Schuylkill River.

Antiques and recycled art surround this cabin designed to resemble a 19th-century schoolhouse.

Where the famed frontiersman was born, raised, and survived Quaker intrigue

An American flag was erected for every day that passed during the Iranian Hostage Crisis.

Overshadowed by quilts, the artistry of these patterned textiles went underappreciated for too long.

A private residence adorned with a gorgeous mural dedicated to the buzzing insect.

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.