Keste on Bleeker Street. Catch an afternoon show. Go visit the Cloisters. Visit the Met. Go to the temple. Natural History Museum. People watch at the Columbia U stairs. Walk through Riverside Park, it's probably beautiful right now. Visit the Frick or the Giggenheim. Go to Zabar's or Fairway and try fancy cheeses and buy something delicious. Walk through a cathedral like St. John the Divine.