Poseritz Brick church is built on foundations of large fieldstones. There are individual fieldstone courses in the tower. Work on the nave began between 1302 and 1325. The structure was designed as a three aisle hall structure, and this plan was followed in the first phase of construction, visible in the applied columns to the left and right of the tower entrance. Those to the east were removed in widening the triumphal arch, when a broader choir than originally planned was added, which required cuts into the east wall of the nave. The outer walls originate from the three aisle hall church. But in the second phase of construction the church was finally erected in the form of a triple-bay hall with buttresses. The choir, nave, and sacristy have cross vaulting, applied columns supported outside by abutment piers. Choir with rectangular termination built shortly afterwards in the 14th century. The sacristy was added afterwards in about 1400 to the north between the choir and the east wall of the nave. Massive west tower dating from later than 1450 using existing denticulation, a polygonal spire being added in 1580. The west portal with its segmental arch has an old, nailed diamond pattern door. The interior is plastered in white.
Oldest furnishings and accessories are the 14th century limestone font and Gothic crucifix over the south portal from about 1400. Other furnishings include offertory box from the 15th century, bell from about 1500, large triumphal cross ensemble with 16th century cross, Mary and John from the 15th century, two wooden patron chairs from 1598 and 1600, memorial tablet from 1600, late Baroque carved altar from 1703, confessional from 1747 and Rococo pulpit by Jakob Freese, Stralsund, from 1755.
References:The Broch of Clickimin is a large and well preserved, though somewhat restored broch near Lerwick. Originally built on an island in Clickimin Loch (now increased in size by silting and drainage), it was approached by a stone causeway. The water-level in the loch was reduced in 1874, leaving the broch high and dry. The broch is situated within a walled enclosure and, unusually for brochs, features a large 'blockhouse' between the opening in the enclosure and the broch itself. Another unusual feature is a stone slab featuring sculptured footprints, located in the causeway which approached the site. Situated across the loch is the Clickimin Leisure Centre.