MIAMI –Miami boasts one of the most exciting contemporary art scenes in the world, thanks in no small part to the enthusiasm of premier collectors like Rosa de la Cruz and Mera Rubell. There is no better time to visit the city than during Art Basel Miami Beach, and Sotheby’s Lisa Dennison suggests kicking off your visit at the Fairchild Tropical Botanic Garden for an outdoor installation of monumental sculpture by John Chamberlain.  Then take in new exhibitions at the de la Cruz Collection and Rubell Family Collection, extraordinary private art spaces that are open to the public.