St Olaf's Hall, Hillhead, Lerwick

St Olaf's Hall, located in Hillhead, Lerwick, was designed by William Henderson of Aberdeen and built between 1848 and 1850. This former hall church features a symmetrical gothic design with a rectangular plan, concealed basement, and a modern addition to the north. The principal front is constructed of droved ashlar, while the side elevations are made of stugged sandstone. The pointed-arched windows have projecting cills and chamfered reveals.

On the south entrance gable, there is a centrally located entrance door at ground level, which consists of a two-leaf vertically-boarded timber door topped by a 5-pane radial fanlight in a three-centred arch. Above this door is a pointed-arched window, and a segmental-arched recess contains a datestone with a carved tree in the gablehead. The gablehead is topped with a gabled ashlar bellcote that has a pointed-arched opening for the bell. The center bay is framed by buttresses with crocketted finials, while tall pointed-arched windows are found in the outer bays.

The east and west side elevations feature tall pointed-arched windows arranged in evenly spaced bays, with rectangular basement windows in the outer bays. The south elevation has a 13-pane gothic traceried fixed-light in the center bay, and 6-pane timber fixed-lights elsewhere, some of which include hoppers. The roof is covered with purple-grey slate and includes a ventilator plinth at the ridge, along with cast-iron gutters and downpipes that have hoppers. A small apex stack with an octagonal can is located at the north gable.

The boundary walls consist of a harl-pointed rubble dwarf wall along Hillhead, topped with a droved ashlar cope and cast-iron railing. Square ashlar gatepiers with pyramidal caps are positioned to the left and right. Rubble walls with concrete coping are present to the east and west.