Castletown, Isle of Man church in the town to be dedicated to St Mary, after the title of the "Rushen Abbey of St Mary". It has two intricate and colourful Celtic Revival/Art Nouveau windows, which depict the Annunciation and the Resurrection. These were made by the Clarke Brothers of Dublin. Castletown Methodist Church on Arbory Street, founded in 1932, is part of the Methodist Church in the Isle of Man, which in turn is part of the British Methodist Connexion. It can trace its history back to the visits of the founder of Methodism John Wesley to the town in the 18th century. It
Castletown, Dorset is found in the village, close to the entrance of Portland Port. The area still features several hotels and pubs, largely established for the navy personnel that once came from the port. The Osprey Leisure Centre is located in Castletown, which was formerly known as the Boscawen Centre, and was opened to the public in May 2007. Originally it was a private Royal Navy facility during the 1980s. Castletown also holds the Portland Community Hospital. This was originally a Royal Naval Hospital which served Portland's naval base from the late 19th century until 1957, when the hospital was handed over