Maybe this is just too infantile to you, but I ran into a website called Medieval Zone and I nearly wept for joy. If only they needed a mathematics consultant...as it is, I'm going to have to wait until I win the lottery to buy all their stuff.

But maybe you just want to look at pictures of castles, or need links to medieval studies, or heraldry, or any of a number of subjects that someone who's reading a site named "Trollkien" might be interested. Then you should look at Castles on the Web, which offers a panoply of links that offers me more trollish delight than I can probably fit into a lifetime.