The most confusing clock in New York.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

The former hotel where Tesla invented the radio.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

An artist's cute bronze subway sculptures belie his violent artistic past.

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

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

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

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.

The very first subway station in New York City is beautiful, decked out in chandeliers, and ... abandoned?

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

The southernmost outpost of the Russian Empire in colonial America.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

The fastest transatlantic ocean liner sat abandoned in a Philadelphia shipyard for decades.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

In which a local geological marvel becomes a quaint roadside attraction.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

The world’s first penitentiary, meant to be humane, drove men insane.

A remarkable cabinet of curiosities in an art space in the center of Berlin.

Tiny memorials honor individual victims of the Holocaust.