It turns out that (in some countries, at least) it is legal own a tank. Yup, a tracked military vehicle with armor plating and a big gun can be yours. However, like any vehicle purchase, there's a bit of research that needs to be done.
This appears to be a modern photo from a Italian WWII historical reenactment group (see www.Progetto900.com). At least its name and website are printed across the bottom of the photo on a forum on historical reenactment (panzergrenadier.net/forum/viewtopic.php?f=9&t=14956&start=45)