One of Gettysburg’s least visited battlefield memorials is off the beaten path, but worth a visit.

The last funhouse of its kind, where guests enter through the mouth of an 80-year-old blue whale.

This restored log building was one of the first toll booths for travelers along the Northern Turnpike.

This monument marks the beginning journey of a wounded soldier's leg that ended up almost two states away.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.

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

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

Catch a ride through the Pennsylvania countryside on this historic narrow-gauge railroad.

Home of the only civilian casualty at the Battle of Gettysburg.

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

The meeting of the northwestern corner of Delaware, the northeastern corner of Maryland, and the southern edge of Pennsylvania.

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

An industrial waste tourist attraction.

An unusual and eclectic collection of local historical memorabilia.

America's oldest drive-in movie theater has been in continuous operation since 1934.

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

A dozen U.S. presidents have stayed at the historic resort, which was known as James Buchanan’s “Summer White House” from 1857-1861.

This museum is dedicated to the first coast-to-coast highway.

When oil was discovered just outside of Pittsburgh, the city became home to this regional stock market.

A bronze statue of Mister Rogers in the neighborhood where he grew up.

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

The site of America's first commercial oil well essentially disappeared after the town went bust.

A "house to which to flee" for settlers in colonial Pennsylvania.

One of the oldest Catholic churches in the U.S., situated just east of Gettysburg.