The former hotel where Tesla invented the radio.

A Manhattan Episcopal church with an eerie underground crypt.

The one-time epicenter of American songwriting is now a little remembered Manhattan commercial block.

This Fifth Avenue church has long been the favored worshiping place of Broadway actors and vaudeville performers.

Manhattan's deadly West Side railroad, which killed hundreds of New Yorkers, is remembered by this simple plaque.

A whimsical, but often overlooked clock in Park Avenue.

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

Need to book a room at the Hotel Pennsylvania? Just dial up 6-5000.

There are owls with glowing eyes in Herald Square.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

A crumbling hospital from the 1850s on Roosevelt Island.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

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

Commemorating the spot where the famous scientist fed his pigeons.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

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

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

This study room in the New York Public Library saw the creation of one of contemporary America's greatest traitors.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

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.

A Manhattan office building is home to the world's largest chess board.

Read a book next to a Midtown waterfall.