The oldest surviving botanic garden in the United States.

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.

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

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

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

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

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

An Irish Memorial commemorating those who perished due to potato blight.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

A unique sculpture park that specializes in the huge and bizarre.

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

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

This colonial mansion has been home to a staggering number of American historic figures.

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

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

The residents of this ominous-sounding street in Pennsylvania liked its name so much they fought to keep it.

A museum of anything and everything Stooge.

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