A layered tribute to the work of mosaicist Isaiah Zagar.

A pride of the state, this working museum crafts pottery mosaics in the style of Pennsylvania's earliest European settlers.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

One of the oldest log cabins in America is one of the last of its kind this historic Swedish dwelling remains a piece of living history.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

Surrounded by industrial sprawl, a small monument marks the site of William Penn's first landing in Pennsylvania.

North America's oldest quarantine facility was built in response to Philadelphia's 1793 yellow fever outbreak.

This Great Depression-era creation was once known as the strangest house in the world.

The oldest surviving botanic garden in the United States.

One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.

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

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

The corporeal remains of Napoleon III's dentist rest under this 15-story obelisk.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

This tiny cottage surrounded by railroads is the oldest surviving structure in Fairmount Park.

Frank Lloyd Wright built this suburban synagogue late in life, but it stands among his most iconic masterpieces.

Designed by Horace Trumbauer in 1893, this Gothic-style castle is now a home for academics.

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

This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

The oldest surviving presidential residence in the United States.

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

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

Contrary to popular belief, this secluded statue doesn't represent Pennsylvania's founder.

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.