Gagosian Gallery
Also galleries in Athens, Geneva, London, New York, Paris and Rome.
Artists include:
Diane Arbus
Richard Artschwager
Richard Avedon
Francis Bacon
Jo Baer
Roger Ballen
Georg Baselitz
Jean-Michel Basquiat
Joseph Beuys
Dike Blair
Alighiero e Boetti
Richard Hamilton
Zeng Fanzhi