The Martinitoren is one of the most famous sites in Groningen. Its name has nothing to do with the drink, by the way :-) but refers to Saint Martinus. Though locals call the tower d' Olle Grieze which means 'the old grey one' and is related to its colour. It's possible to climb the tower and enjoy a fascinating view of the city centre and the surrounding neighbourhoods. With good weather some say you can even see the Wadden Sea (30km north).

GPS: 53.2192°N 6.5680°E