Peel, Isle of Man castle on St Patrick's Isle, and a cathedral, seat of the Diocese of Sodor and Man (the diocese was founded when Mann was ruled by the Norse). Peel is on the west coast of the Isle of Man, on the east side of the mouth of the River Neb. To the north west is St Patrick's Isle, connected to the mainland by a causeway, and to the west across the river is Peel Hill. The A1 road connects Peel with Douglas. The A4 and A3 roads connect it with Kirk Michael and Ramsey. To the south of Peel is Castletown,
Castletown, Isle of Man to the west Port St Mary and Port Erin. The older parts of the town are largely built of local grey limestone. At Scarlett, a short distance to the south of the town, there are the remains of an ancient volcano and various other features such as fossils and thick sheets of limestone. The A3 road connects Castletown with Ramsey via St John's, while the A5 road (also known as New Castletown Road as opposed to the Old Castletown Road which takes a more rural route nearer the coast) connects the town with Douglas to the north-east and Port Erin