That's really odd! I have worn numerous pairs of Dansko clogs all over this country and Europe. They're European in origin (Danish, actually). Are you sure you don't just think people are looking at you funny because you feel insecure in them? I always wear mine with jeans -usually boot cut jeans. My closed back ones I wear with skirts and dresses and sometimes pants/jeans, but my open back ones I almost exclusively wear with pants/jeans. Once in awhile I'll find a skirt that I think they look good with, but usually the open-backed ones look better with pants and jeans.
Don't worry about it -just wear what you want to wear! Where are you in Europe? Start looking around and you'll probably see more clogs. Even in places far removed from Northern Europe they seem to be a pretty popular style shoe.
Not to give you a complex of any sort, but keep in mind that, depending on where in Europe you are, people may just be looking at you because they know you're not a native and they're trying to figure out where you're from, etc. I've found that happening to me in a number of places -small towns in Italy and out in the countryside of the Netherlands, UK and Belgium especially. It's always just been interest and curiousity though -nothing ugly.
***If you want to know where to buy them -www.danskooutlet.com is great! REI also carries them as does Zappos.