The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

Mysterious stone tower featured in many alternative histories of the New World.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

Lie in a hammock where George Washington stood.

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

The "Seinfeld" diner.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

These ancient sacred grounds granted amnesty to those who managed to reach them.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

This ancient Hawaiian henge may have been an early star chart.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Elevated freight railway turned wildly successful urban park.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

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

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Mysterious 500-year-old tapestries depict a unicorn hunt.

America's greatest forgotten garden and the former stomping grounds of Son of Sam.

Self-sufficient greenhouse floating on the Hudson River.

Reclaimed by nature, the ruins of Doodletown, New York are remnants of a town consumed by a state park.

Protecting the future of some of the rarest and most misunderstood mammals of North America.

These World War I shooting range tunnels are now haunted halls of underground graffiti accessed through the roots of a tree.