West Chelsea between 10th-11th Ave and 20th-25th St. is the cradle of the US modern art world. Stroll between mega-wealthy and more ‘affordable’ galleries, and refuel at Cookshop / 156 10th Ave (20th St) / 212 924 4440, or Tía Pol / 205 10th Ave (22nd St) / 212 675 8805. Note most galleries open Tue-Sat, but check ahead for hours. See oneartworld.com for an extensive listing of Chelsea galleries, or nygallerytours.com takes group and private tours. For more art and antiques, see also (Advanced Shopping/Gift of the Gavel).