Castle, is designated a Grade II* Listed building. The gateway and curtain wall to the south east of the house became Grade II* Listed at the same time. Located around south of the entrance to The Captain's House is a War Department/Admiralty boundary marker, which has been Grade II Listed since May 1993. The Royal Breakwater Hotel was designated Grade II in May 1993. At the end of the village, at the entrance of Portland Port, is the former Dockyard Police Station. The MOD police station was initially a railway station, and is Grade II Listed. References External links Archive photographs of Castletown, Portland Villages in Dorset Isle of Portland