I always loved the maps and cutaway views of the Justice League's headquarters, Challenger Island, or the Bat Cave. Switching from DC to Marvel, here's "Inside the Baxter Bldg." from the Fantastic Four Annual #1. Pencils by Kirby.
Note that "Torch and sister Sue Storm commute from suburbs -- use rooms below for convenience." Both Ben's room and Johnny's room stand between Sue and Reed. Sue's room is dangerously close to the exhaust pipes from the rocket silo.