This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

An abandoned Gold Coast-era mansion once intended for the exiled ruler of Albania, who never arrived.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

An exotic wildlife habitat right off The Strip.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

Discover the taste of mold.

Snack on a partially gestated duck egg.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Whale bones, scrimshaw, and sperm oil make up just a part of this comprehensive collection of whaling history.

The second oldest Jewish graveyard in the U.S. is tiny, with connections to George Washington and Henry Wadsworth Longfellow.

Oldest synagogue in the United States.

Avoid gangster interaction while window-shopping.

There must be a pun in this haystack somewhere...

A bit of retro transportation flair preserved in the world's largest department store.

The most confusing clock in New York.

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 former hotel where Tesla invented the radio.

Lie in a hammock where George Washington stood.

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

Elevated freight railway turned wildly successful urban park.