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

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

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

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

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

A toxic ghost town sitting atop a massive coal fire.

This massive sycamore tree has been labeled as one of the largest in the state.

This shrine dedicated to the Virgin Mary is also a tribute from a mother to her fallen son.

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

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

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

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

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

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

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

A 30-mile-long glacially-carved canyon leads to a massive pair of glaciers.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

Known as the “Official Greeter of Juneau,” this dog still welcomes ships and their passengers to Alaska.

Just below the surface, shrimp are producing temperatures hotter than the sun.

Nothing says indulgence like a 1,500-pound chocolate castle.

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.

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

A small, but award-winning beach known for its literally spotless reputation.

This sheep farm has been forever transformed since being built for “The Hobbit” film series.