One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

A 18th century graveyard and its astonishing cortege of macabre iconography.

This isolated island is often capped by its own fluffy cloud.

A star-shaped fortress town fort built in the geometric model of the Renaissance utopian city.

The ruins of an abandoned 18th-century town that is slowly being reclaimed by the forest.

A pyramid commemorates the birthplace of James Buchanan, the 15th president of the United States

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

A plaque immortalizes the spot where the early American spy said his famous last words: "I only regret that I have but one life to lose for my country."

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

A crumbling staircase in upper Manhattan is all that remains of one of the most important sites in sports history.

The mummified relics of an American missionary.

Little Red Lighthouse under the George Washington Bridge.

The first "Hall of Fame" in America was designed by legendary Gilded Age architect Stanford White for what was then the NYU uptown campus.

The notorious headquarters of a corrupt political machine.

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

Rummage through this sunken ship, but leave your scuba gear at home.

Relics given to a Manhattan church to avoid seizure by the Italian government.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

The oldest living tree in Manhattan comes shrouded in sinister legend.

The rough and tumble president's childhood home displays the shirt he was once shot in and the speech that saved him.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

Named the fifth most beautiful building in America in 1885, this former courthouse boasts the best view in the Village.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

One of the oldest Jewish cemeteries in the city, it is now overgrown with an urban forest.