The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

Amid the marketing blitz of modern Times Square is an elegant holdover from its showbiz glory days.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

Slyly buy a shake in the Parker Meridien lobby.

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

Unique antiquarian shop specializing in globes, maps, and prints.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

An Iron Age hillfort rooted in Arthurian legend was made famous by musician Peter Gabriel.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

A tribute to the Nirvana frontman hides beneath the bridge that was the singer's beloved hangout spot.

This former Masonic hall has been turned into an art project that uses even more metaphysical iconography.