Charleston's historic city jail once held everyone from pirates to Civil War POWs.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.

Unrepaired walls from a 1920 anarchist bomb attack.

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

Set sail on a small scale.

Try not to get slimed in Tribeca.

Avoid gangster interaction while window-shopping.

Elevated freight railway turned wildly successful urban park.

The notorious headquarters of a corrupt political machine.

Once a flowing stream and where the USS Monitor, the world's first ironclad, was built and launched.

A semi-scholarly approach to sex.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

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.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

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

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

The narrowest street in Canada was once a spot for dastardly doings, now a historic piece of Chinatown.

This historic Victorian hotel has a scandalous history of affairs and murder.

This stoic, if derpy, giant stands as a monument to Oregon's statehood and the novelty culture of yesteryear.

The highest point in Washington state is a volcano covered in glaciers.

This long, dark tunnel is open to hikers, but those without lights are known to get confused even on the straight path.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.

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