The Town Hall still retains its original jailhouse now housing the Cell Block Museum. The Holy Trinity Church is one of a handful of churches built during the Commonwealth. The absence of a tower reflects Cromwell's view that towers were irreligious. The 18th century barracks house the Borough Museum and Art Gallery. Also of interest is the Wine and Spirit Museum, that incorporates a Victorian Chemist Shop and pottery.
Holy Island is a good choice for a rest day.
In addition to the castle, priory and church, the Museum of Island Life, that is housed in an 18th century fisherman's cottage is well worth a visit. At St Aidan's Winery you can sample the famous Lindisfarne Mead. Seahouses's greatest attraction is a boat trip to the Farne Islands. The Islands have a wild beauty and are the summer home of a wide variety of sea birds, especially puffins, guillemots, terns and kittiwakes. On Inner Farne you can visit the tiny 14th century chapel built in honour of St Cuthbert.