A giant Troll lurks under one of Seattle's oldest bridges.

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

A geological mystery on Camelback Mountain.

The house where John Wilkes Booth conspired with his co-conspirators.

This grand gothic brewery has been pumping out suds for over a hundred years.

Helen Keller once broke ground on this historic center for the study of technologies to benefit the hearing impaired.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Unrepaired walls from a 1920 anarchist bomb attack.

A dilapidated dock tells the story of Titanic's missed arrival.

Elevated freight railway turned wildly successful urban park.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

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

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

The world's largest piece of copyrighted artwork.

An enormous, inside-out glass globe built in 1935.

This landmark cemetery in Boston was created more than 300 years ago.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Ironically this massive termite is the mascot for a company that is acclaimed for killing his kind.