One of the few remaining American elm trees in New York’s Tompkins Square Park was the birthplace of a new religion.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

New York City's smallest piece of private property.

Mural fragments and various sculptures honor the longtime artist.

This stimulating sex toy museum is sure to arouse the interest of its visitors.

These three lighthouses played a fundamental role in the maritime life of Eastham.

The ceiling of this vintage movie palace is covered in fantastic Art Deco murals.

Eclectic collections, artwork, and some feline friends fill the writer's former home.

This abandoned radar station from the Cold War era now only broadcasts a seriously ominous air of isolation.

Centuries-old hoofprints and wagon tracks reveal themselves after a good winter storm.

This lakeside tower is the third attempt at getting a tourist destination to stick on the spot.

This beautiful Cape Cod beach offers dazzling views and an interesting historical footnote.

The largest glacial erratic boulder on Cape Cod.

This delicate museum is devoted to the art and industry that once supported Cape Cod's oldest town.

This Cape Cod museum exhibits what it claims is the only authenticated pirate treasure in the world.

A 19th-century smallpox cemetery is being reclaimed by scrub forest and sand dunes.

Three hundred years of preserved Spanish colonial history in San Antonio.

One part antique store, one part curiosities hodge-podge.

The mosaic Star of David at the front of this store hints that it's no ordinary Italian grocer.

Final resting place of Typhoid Mary.

Seriously good slices of Sicilian pizza lurk at the back of the Bronx's oldest enclosed market.

Hidden inside one of the world's most well-visited zoos is a secret plaque promising eternal life.