Radcliffe Moat is possibly a 13th century medieval fortified manor house, founded by Sir Robert de Eueringham. The large quadrangular platform, is encased by the remains of a substantial moat but there are no visible building foundations and one corner is lost to a railway line. The successor to Hangthwaite Castle, the site is heavily overgrown and is best viewed in winter. 8 miles south-west at Mexborough is Castle Hill.