They're harder to come by, but CQB in bigger areas.
Such as old schools and factories, rather than a series of 90 degree bends and 2x2m interconnecting rooms. Longer lines of sight, multiple access points and so on.
Going back a bit, Beaconsfield had a badger tac sight which was an old academy and was great as it was classrooms, presentation rooms, and old bar and stuff. Too bad the landlord moved up the redevelopment plans.