Is it a cold, rainy or snowing day? Short on cash?
These are times when you start thinking of inside things to do. Museums usually get crowded and some are expensive (of course, pay less than the suggested price whenever possible). My suggestion is to visit an auction house.
I happened to be near Sotheby’s and took the following photographs as samples of what was being viewed on just one of their floors- all free:
Sotheby’s Auction Always something on view. Sotheby’s New York is located on the Upper East Side of Manhattan at the corner of 72nd Street and York Avenue.
Christies Auction 20 Rockefeller Plaza
New York, NY 10020