Friday Fun Skate
Every Friday from mid April until mid September skaters gather in Groningen to skate together. The group is accompanied by a rolling music boombox. The tours are quite easy to ride, though total beginners might find it a bit scary to have so many others around themselves. Each week another tour is chosen. It's possible to get an sms service to know if the Friday Fun Skate takes place or not. Lenght: 18 - 23 km. GPS: N 53° 13' 25.1364" E 6° 33' 19.6128"
Walk in het Noorderplantsoen
(http://www.noorderplantso...) on a sunny day, this is the place to relax after a hard day's work for a lot of students.
Visit the Noorderzon open-air theatrefestival
(http://noorderzon.nl/) in the second half of august, art, comedy, dance and theatre in the noorderplantsoen.
Take a canal cruise
(http://www.rondvaartbedri...) (http://www.rondvaartingro...) the historical center.
Climb the Martini tower
(http://www.martinistad.nl...) for a nice view over the city. it's 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. tickets are available in the vvv tourist information shop just over the road.
't Peddeltje kanoverhuur
See a band at Vera underground pop club
(http://www.vera-groningen.nl/), where pearl jam, nirvana, sonic youth, the white stripes and many others performed.