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

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

A toxic ghost town sitting atop a massive coal fire.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

This 15-foot tall obelisk commemorating the Philadelphia-Baltimore railroad connection sat neglected for over a century.

The singer, actor, and activist lived here during his final years, and now it’s a museum dedicated to his legacy.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

One of Philadelphia's largest murals resides hidden under this bridge.

This beloved marketplace mascot poops money and grants good luck.

These medicine cabinet staples are part of the museum's collection of everyday objects.

Alexander Hamilton’s creation caused quite a bit of controversy.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

Dr Barnes' $25 billion private collection of art and arboretum.

Where America’s first doomsday cult awaited the end of the world.

The house where John Wilkes Booth conspired with his co-conspirators.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

Hidden behind West Philadelphia rowhomes is a haven for migratory and local bird species both ordinary and rare.

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A local prank turned town icon.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.