Mandalay Bay has a sky mall, in the bridge that connects Mandalay Bay and the Luxor. In addition to Nike Golf, Urban Outfitters, and Samantha Chang, the mall has a contemporary arts gallery. From Mandalay Bay's press release (PDF File),
"Godt-Cleary Gallery: Godt-Cleary aims to create a new and dynamic gallery environment that promotes both contemporary fine art limited editions as well as functional design objects by museum-quality contemporary artists (1960 through today)."