Contemplating the Void

From the Guggenheim:

"The central void of the rotunda has elicited many unique responses over the years, which have been manifested in both site-specific solo shows and memorable exhibition designs. For the building’s 50th anniversary, the Guggenheim Museum invited nearly two hundred artists, architects, and designers to imagine their dream interventions in the space for the exhibition Contemplating the Void: Interventions in the Guggenheim Museum."

Check out the proposals.