[URL="http://manorhouseworkshopmindstalkers.wordpress.com/on-line-store/"]Manorhouse Workshop[/URL] is an Italian company that make very lovely terrain suitable for medieval/fantasy boards. The website is a little convoluted though. They also just launched an Indiegogo campaign (literally like a couple of hours ago as I write this).
For scale:
Suitable for miniatures from 25mm up to 40mm scale
Most things below are sold in smaller components, check the above link for details.

Dungeon walls


Medieval Italian church


Italian medieval castle


Medieval Italian town