Scale lighting is a crucial component for a properly displayed and lit large model. Especially an interior and even more so when it's cinematically inspired. This Batcave by Brent Waller is a fantastic example of scale lighting, with super dramatic results. Notice how a sense of depth and scale is accomplished by using numerous small sources of light and how there's a good balance of darkness in the image ( Batman would approve). Sometime what you don't light is just as important as what you do.