This picturesque stream was up until recently the site of a ten story mountain of slag and sewage.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

These disused steel furnaces are now haunting ruins that may one day be a national park.

This icon of the Atomic Age now lays dormant.

The Paul Bunyan of the steel industry.

This shrine to McDonalds' most iconic sandwich holds a 14-foot tall burger.

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

Pennsylvania's own Roswell-style UFO mystery.

This historic furnace was once used to produce cannonballs during the Civil War.

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

The site of the little-known Pennsylvania battle that sparked the Seven Years' War.

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

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

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

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

A piece of baseball history is preserved in a Pittsburgh parking lot.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

Remember and reflect at this 9/11 memorial site.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

Home to the first child born to English colonists in North America, this colony mysteriously disappeared while waiting for supplies.

An abandoned textile mill that is now home to art and concerts.

Anna Anderson spent most of her life claiming to be the lost Romanov child Anastasia.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Stroll through a wonderland of stupendous moss-covered trees.