Desert/Exotic

As you turn the corner, you're hit by an intense wave of heat, needing to shield your eyes for just a moment for them to adjust, before you gaze out at the large sand dunes before gazing up slightly, to look at what seems to be.... The sun.(?)

"We put in reflective panels so that the sun would shine more intensely in this room." The clerk explains and sure enough, closer examination shows what looks like tinted glass as the roof, and the 'desert' was about the size of a football field.

"Where is everyone?"