This railroad and oil tycoon's lavish estate now stands as a time capsule of the Gilded Age.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

A collection of artifacts from Maryland's maritime past.

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

The residents of this ominous-sounding street in Pennsylvania liked its name so much they fought to keep it.

Beautiful stained glass depictions of the history of human flight fill this surprising chapel.

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

Elevated freight railway turned wildly successful urban park.

A terrific purveyor of natural history objects and curios.

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

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

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

Commemorating the spot where the famous scientist fed his pigeons.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

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

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

Avoid gangster interaction while window-shopping.

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

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.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.