Pennsylvania's own Roswell-style UFO mystery.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

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

This secluded walking trail is a hidden gem of a Pittsburgh park.

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

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

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

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

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

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

This church in Pittsburgh is home to the largest collection of religious relics in North America.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

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.