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

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

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

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