The Martinitoren (Martini Tower) is the highest church tower in the city of Groningen, The Netherlands.
The tower is located at the north-eastern corner of the Grote Markt (Main Market Square), is part of the Martinikerk (Martini Church). The carillon within the tower contains 62 bells. It is considered one of the main tourist attractions of Groningen and offers a view over the city and surrounding area. The front of the tower shows three pictures above the entrance: the blind man Bernlef, Saint Martinus and Rudolf Agricola. All three are men are linked to the history of Groningen. The tower is tilting about 0,6 m, according to reports[citation needed] the tower has a foundation of only three metres deep. The citizens of Groningen call their tower d'Olle Grieze, meaning the old grey one in the local dialect.

Must see when you're in Groningen. It is THE symbol that represent Groningen en in the middle of the city. You can take tours up the tour or climb it all yourself. There are even opportunities the climb the tower on the outside. On the top you can see a big part of the city, and plan where to go next.

The Martini Tower is the main attraction of Groningen. However it is not worth it to climb the steep stairs for the view as it is similar to that from the top floor of the neighboring VD store.

I lived nine years looking out on the Martinitoren, waking every morning to its church bells.