Architects do all sorts of interesting things to hide mundane but necessary pieces of plant associated with services like power, water and cooling.
I discovered this example on the corner of Pultney Street and North Terrace in the the Adelaide CBD.
I am not sure what this technicolor grill is hiding other than two large white cylindrical stacks which may be a part of the building's air-conditioning system. Anyway the continuous Technicolor light show makes it all seem like a piece of art rather than an ugly part of the air-conditioning plant.
I just loved the geometry and especially the symmetry of this image.
Photo: Robert Rath, ‘Day 575, Urban Geometry' 1.3 f/7.1 ISO160 27mm