Martinikerk
The Martinikerk is the main church of the city of Groningen. During excavations during the last restoration, remains were found in the nave, which indicate a first wooden church around the year 800. Around the year 1000, the first stone church was located at the Martinikerkhof. This was a single-aisled Romanesque church made of tuff. Remains of this were also found during the last restoration. The church originated from a three-aisled cruciform church from the 13th century, which was enlarged and extended westwards in the 15th-16th century and provided with a new choir with ambulatory in 1450-1460. On the north side of the choir, a two-aisled chapel with a floor and sacristy. Nave and choir completely vaulted in stone.