Janskerk, Haarlem

Gerard van Tetrode donated land in 1310 in the centre of Haarlem to build St. John's monastery.

Later the St. Barbara gasthuis was founded in 1435 by the Hugo van Assendelft, priest of the St. John's monastery, on the south side of this area.

The monastery's church and the old Gasthuis doorway are the only parts of the large complex that still exist today.

The order of St. John was disbanded after the Protestant Reformation and the church reverted to the state in 1625.

The Haarlem council sold most of the monastery's land, and much of the art during the following years, which added considerably to the wealth of the city.