The Alpes are the highest and most extensive mountain range system that lies entirely in Europe,stretching approximately 1,200 kilometres (750 mi) across eight Alpine countries: Austria, France, Germany, Italy, Liechtenstein, Monaco, Slovenia, and Switzerland. So as a western Europe map it would be nice to do this part of Europe.
Search on youtube for "Axalp" ;-)
PS.: Aegean Sea would be nice too.