The oldest living tree in Manhattan comes shrouded in sinister legend.

The site of the deadly Triangle Shirtwaist Factory Fire.

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

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.

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.

Elevated freight railway turned wildly successful urban park.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

A fiberglass jungle, deep in the wilds of the Cleveland suburbs.

Superfans of The Shawshank Redemption can take a driving tour of most of the films real locations.

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

A memorial for an outsider theorist who believed that the planet is actually hollow.

A real flying saucer, contracted by the U.S. Air Force.

The tragic reality of a village riddled with rumors of haunts, chemical spills, and serial killers.

One of the largest underground systems runs under Canada's largest urban center.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

Mortarless walls that stretch for miles are a lovely solution for creating grazing land in the harsh terrain of the Aran Islands.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

A hugely vast Irish landscape of barren rock that stretches for miles.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

This ancient Irish tower could easily have stood in for Rapunzel's prison.