There’s the old Cambridge of ancient university courts (never called quads, as they are at rival Oxford University), the medieval King’s College Chapel, and students languidly boating on the River Cam, but there is another side to Cambridge. Away from the tourists and film crews, expanding fast in several directions, this is a new southeast-England town in all but name. Recent districts include Eddington, a planned development in the northwest corner of the city, where there is a refined new civic structure by London-based architects MUMA, combining a theater and community meeting rooms with a daycare center.