This zombie-themed restaurant stands out in the heart of corn country.

The oldest active church in Pennsylvania is also the second oldest Swedish Church in the United States.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

The first American department store, and home to the largest operating musical instrument in the world.

Huge masonic hall in Philadelphia with lavishly themed rooms.

This elaborate towering structure was once famed for its revolutionary height.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Yo, Adrian!

This spot memorializes one of the greatest plays in NFL history, unless you happen to be a Raiders fan.

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

There aren't too many operational funiculars around, but Pittsburgh has two!

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

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

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

A pyramid commemorates the birthplace of James Buchanan, the 15th president of the United States

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

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

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

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

It would take 35 firetrucks to fill this enormous glacial pothole.