The last street in Pittsburgh that's paved with wood.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

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

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

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

See wolves, coyotes, and arctic foxes in a natural environment smack in the middle of New York State.

Remember and reflect at this 9/11 memorial site.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

An abandoned stretch of highway, deteriorating next to the operational one.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

This national landmark is also home to a massive treehouse.

The train collection of an eccentric New England seafood mogul is now a National Historical Site.

A field of nothing but boulders which resembles a giant's gravel driveway.

This jail which was in service for over a century is now open for curious visitors.

Featuring the largest CinemaScope screen in Pennsylvania, this drive-in has entertained moviegoers for more than half a century.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

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

Since the 1930s, this Pennsylvania town has celebrated the humble tomato.

Narrow gorges and deep pools created by long-ago glaciers.

A train station that was abandoned by the coal industry and converted into a cocktail bar. Now it’s home to the local visitor bureau.