A scientific repository of goiters, boils and other ailments throughout Mexican history.

Part bookstore, part café, and part forest.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

There are owls with glowing eyes in Herald Square.

This small New York museum celebrates the mountainous artwork of a Russian mystic.

This was one of the first (and last) university-built and operated nuclear reactors.

One of the last Jazz Age "Wonder Theaters" in New York City.

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

A good place to research the Freemasons, esoterica, occultism, and hermeticism.

Everyone from Mark Twain to Teddy Roosevelt has a pipe hanging from the walls of this historic chophouse.

Lie in a hammock where George Washington stood.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

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

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.