Adore is my favorite spot to carefully select a few beautiful flowers to take home or bring as a gift. I always try to pair my visit with a trip right around the corner, to Dashwood Books, for a great selection of art books.
Apart from Dia Beacon, in Beacon (upstate New York about an hour away from Grand Central Station) and also the Judd Foundation in Soho, this institution is absolutely one of my favourite places to visit and it is located in Long Island City, Queens. It showcases sculpture in the broadest sense and has an incredible building that used to be a workshop that refurbished and fixed subway cars. It has been running since 1928 and when you visit you will definitely see why that is.
Its quite a trip out there but so very worth it if you wanna have the very special beach-experience! You can go there by car and then take the ferry either to Pines or Cherry Grove (I would prefer Pines!) or you do all by public transportation - there a "getaway tickes" for 36Dollars and the transfer works really smooth - may even be faster than by car!
German Expressionism makes me giddy. All my favorites are here at any given time - George Grosz, Otto Dix, Egon Schiele, Gustave Klimt - and the building was designed Carrére and Hastings, the same architects that designed the New York Public Library.