Greyfriars' Museum

Greyfriars' Museum in Lincoln is the remains of the infirmary of a Franciscan friary, dating from around 1230 and the late 13th century, with additions made in the mid-19th century. It was converted into a mechanics' institute in 1883 and later restored and transformed into a museum between 1905 and 1907 by William Watkins. The building features dressed stone and brick with ashlar dressings, and has plain tile and slate roofs, along with a 19th-century brick side wall stack.

The exterior includes chamfered eaves and coped gables, with a cross on the east side. The main structure has nine bays, supported by seven 19th-century buttresses and featuring eight double chamfered barred windows. Above these are nine 2-light windows with chamfered surrounds. To the left, there is a lozenge-shaped datestone from 1833. The east end showcases a 13th-century 3-light window with Y-tracery and an oval window above it. The west end has angle buttresses and a 20th-century Tudor arched 3-light window. The north side includes a 19th-century two-storey lean-to stair enclosure.

Inside, the undercroft measures nine bays long by two bays wide, supported by octagonal piers and responds with moulded capitals and bases, as well as single chamfered ribs and small bosses. The north side has six blocked windows to the east and a doorway to the west. The upper floor features a 13th-century door and three blocked round-headed windows, along with a fireplace that has a shouldered lintel. In the northeast corner, there is a pointed recess. The roof has been restored with common rafters, arch braces to the east, and scissor braces to the west, both with double collars. This building is noted as the earliest surviving structure in England associated with the Franciscan order and is designated as a scheduled monument.