Offroad experience in Germany

Question

I'm looking for a offroad park in Germany, where I can rent an offroad vehicle (but not an ATV) and have some fun for 2-3 days. The best case would be such a place in Hesse or Rhineland-Palatinate, but the rest of Germany is still OK.
As I have almost no experience, it would be great if there is a trail for beginners. Any recommendations?

Answer 1

EDIT: I am a bit surprised that offroad parks here are relatively scarce, but on the other hand Germany is very densely populated with not so much ample room for activities. There you go:

Hessen, Knüllwald

http://www.offroadpark-knuellwald.de/index.php

Berlin, Jänschwalde

http://www.einmalige-erlebnisse.de/products/Motorpower/Hummer-H1-offroad-selber-fahren/30-Min-Hummer-H1-offroad-selber-fahren-in-Jaenschwalde.html

Mecklenburg-Vorpommern, Karenz

http://www.ofck.de/

Bavaria, Langenaltheim:

http://www.offroadpark-langenaltheim.de

Saxony-Anhalt, Wurzelsepp

http://www.wurzelsepp-peckfitz.de/gelaende.htm

Lower Saxony, Fürstenforest

http://www.furstenforest.de/

Lower Saxony, near Hessen, Stadtoldendorf

http://www.fpmammut.de/

Mecklenburg-Vorpommen, Steinhagen

http://www.msc-nordvorpommern.de/

Answer 2

OK, no ATVs. How about the other side of the spectrum, tanks?

A place where you can drive Panzer has been in the news a couple of times. It is close to Berlin. I believe it must be Panzerkutscher. They have a big terrain, some old cars (to crush), and various tanks at the disposal of any paying customer above the age of 16 years. You can drive, take repair courses, etc.