Munich is a very green city and has a lot of parks where is possible to walk, ride with bike, swim or just lay on the grass.
The most bigger and famous park in Munich is the Englischer Garten but there are other several nice and interesting parks in the city like:
Olympiapark
Botanischer Garten München-Nymphenburg
Luitpoldpark
Westpark
Hirschgarten
Schloss Nymphenburg
Hofgarten
You can found a list with all the parks in Munich visiting our page:
www.munich4you.net/web/directory/nature/parks.html