Priceless space junk on display in front of a local Dairy Queen.

This recreation of a 19th-century dime museum is full of oddities.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

Arlington Cemetery exhibit dedicated to death and grieving.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

Century-old shop, specializing in Occult products.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

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

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

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

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

The penultimate and final resting places of British General Edward Braddock—minus a few bits and pieces.

This abandoned iron furnace was one of the first to use coke—a type of high-carbon fuel—to make iron.

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

Designed by Horace Trumbauer in 1893, this Gothic-style castle is now a home for academics.

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

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

Surrounded by industrial sprawl, a small monument marks the site of William Penn's first landing in Pennsylvania.

The oldest continually operating golf course in the United States.

Beautiful views of the surrounding hills and birds of prey can be found at this sanctuary.

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

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