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

Thousands of Matchbox cars spanning generations call this New Jersey barn home.

American involvement in World War I officially ended in 1921 in New Jersey, three years late and thousands of miles from the battlefield.

A recently abandoned psych ward at the end of Sanatorium Road.

The famous bell was secreted away and hidden in a church in Allentown during the British occupation of Philadelphia.

Mysterious rocks that ring musically when struck.

One of New Jersey's oldest surviving buildings still bears the mark of our former British overlords.

The way these carnivorous dinosaurs are posed is an homage to a classic work of paleoart.

This tiny structure was built by the creator of the Brooklyn Bridge.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

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

This splendid Versailles-inspired mansion has the largest French-style formal gardens in North America.

The first partially complete dinosaur skeleton was discovered here, forever changing the world's view of the ruling reptiles.

This Philly landmark has a giant butterfly pavilion, three floors of insect displays, and withstood a $40,000 heist.

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

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

Arlington Cemetery exhibit dedicated to death and grieving.

The final resting place of one of the United States's greatest poets.

Current docking place of the SS United States, the fastest transatlantic ocean liner.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

The oldest of only three existing statues of the great novelist stands in a city he did not care for.

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

This elaborate towering structure was once famed for its revolutionary height.

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