A garment factory hides a small Dominican eatery in the hallway to its freight elevator.

This semi-hidden Manhattan restaurant is based out of a loading dock.

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

An homage to Jackie Gleason's bus-driving character from 'The Honeymooners.'

Slurp sesame noodles at the third-generation family-run establishment that invented them.

All of the Malaysian sweets at this shop are made daily with a whole lot of love.

Home to a dizzying array of letterpress blocks with a rich history.

An institution dedicated to the towering buildings that make up skylines in New York City and around the world.

This vacant church in the Financial District was once the heart of New York's first Syrian immigrant community.

These ornate manhole covers were used for a now-forgotten purpose.

A 19th-century politician who died after walking home in a blizzard is honored with this Manhattan statue.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

A semi-scholarly approach to sex.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

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

A small part of lower Manhattan is actually made from a bit of England.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

The place where Dvořák composed some of his most famous works.

The only subway station in the city that still makes use of gap fillers.

The most confusing clock in New York.

Red frames showcase remnants of one of New York's original subway stations.

Nope, not Washington Irving's house.

The notorious headquarters of a corrupt political machine.