This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

This Hindu temple in suburban New Jersey is the largest in the United States and one of the largest in the world.

A grotesque Fiji merman dwells within this traditional Dutch-style building.

Once used as a deterrent to drinking alcohol.

These old doors are covered in the signatures of Rehoboth Beach artists dating back to the 1930s.

A local prank turned town icon.

Outside a small brewery, a Gothic fountain that once provided water to thirsty horses.

This national landmark is also home to a massive treehouse.

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

A portion of the old Pirates stadium over which a defining home run once flew still stands even after the rest of the stadium was torn down.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The world’s first penitentiary, meant to be humane, drove men insane.

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

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

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

Huge masonic hall in Philadelphia with lavishly themed rooms.

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

At this former Prohibition speakeasy, electric birds signaled the arrival of hooch.

Public opinion is still divided on this enormous sculpture in front of Baltimore's Penn Station.

Mural made of 100,000 pieces of hand blown glass, and one of the largest glass murals in the US.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

The first American department store, and home to the largest operating musical instrument in the world.

In which a local geological marvel becomes a quaint roadside attraction.

The oldest farmer's market in America is so ancient it was approved by the King of England.