Pity the collectors silently nibbling endive in austere Chelsea galleries – at 49 Geary, openings mean unexpected art, goldfish-shaped crackers and outspoken crowds. Four floors of galleries feature standout international and local works, from 19th to 21st century photography at Fraenkel Gallery to Andy Goldsworthy installation art at Haines Gallery and sculptor Seth Koen's minimalist pieces at Gregory Lind. For quieter contemplation, visit weekdays.