Once the tallest building in the world and the site of “the highest dinner ever held in New York” this building now holds the most expensive penthouse in the city.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

A Nevada mining boomtown that ran out of silver and luck.

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

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

Little Red Lighthouse under the George Washington Bridge.

This once-grand marvel of engineering is now 41 miles of scenic hiking trail.

An errant donkey ushered in a new era of mining in Nevada.

Get a taste of the Wild West and a glimpse into the gold rush in Goldfield's oldest continually-running business.

Back in the day everyone who was anyone played this historic western theater.

If you want to take a peek at Area 51, this is legally as close as you're going to get.

These once-beautiful historic graveyards are set against the barren Virginia City hills.

This tiny cluster of abandoned buildings looks like the future of the ghost town - today!

This once bustling boomtown hotel is now the hottest spot in Nevada for ghost hunters.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Tucked away amidst some of the most famous addresses in the world is New York’s only fraction of a street.

Don't blink or you'll miss it.

Hiroshima survivor on Riverside Drive.

The unbelievably opulent home built for an infamous newspaperman.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

The "Seinfeld" diner.