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

The "Seinfeld" diner.

This little museum is built on a theater that was once a wildly elaborate speakeasy.

Ride the subways of yesteryear.

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

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

A crumbling hospital from the 1850s on Roosevelt Island.