Let the Sun Shine In
Yet another benefit of paying attention to where you put this big building in the first place: sunshine! There are so many ways to use it! It's like the pashmina scarf of celestial bodies.
First of all, you can design the building to avoid the hot summer southern-exposure type of sun, the sun that makes your car into a greenhouse and a hospital very, very expensive to keep cool.
Second, you can put in giant windows, which serve two shiny, happy purposes: reducing the need for electric lighting during the daytime, and lifting the mood and healing ability of patients. Really.
Third, you can get all creative with your architecture self and get that light deep into the building so that less electricity is used throughout the facility. Make a pretty atrium. Create a courtyard. Use skylights and mirrors to bring daylight to every last nook and cranny.