The Jacobean Church (Jacobijner or Grote Kerk) in Leeuwarden, the largest of the medieval churches in this city. It was built between 1275 and 1310 as part of a Jacobin (Dominican) monastery and was later enlarged. The Gothic building was converted during the Reformation to be a Protestant church and lost its altars and many of the decorations. The church is still used as a Protestant church.