Netherby Hall, the historic home of the Graham family, is a Grade II* listed mansion. It stands upon the site of the Roman fort of Castra Exploratorum. Its nucleus is a 15th-century pele tower, extended or altered in 1639 for Sir Richard Graham and enclosed by extensive later additions to the house (in the late 18th century), with further extensions taking place in 1833 for Sir James Graham l by William Burn. The original pele tower is thought to have been built with stone from the fort and the remains of the fort and its "vicus" noted by Tudor antiquarians have been obliterated by the later extensions of the Hall