I think the best bet is to get a memory card, if you don't have one already, and load a European map set such as City Navigator. This will not give terrain data, but will show other topographical information. You can download the latest Jeppesen aviation database (Atlantic International for Europe) from the Garmin website at vast expense.
Garmin Website
They have quietly increased the price from US$35 to US$49.95 this year!