Live demo of procedurally generated "Nurenberg Chronicles"-style city, with coat of arms and name

Sources on github: https://github.com/EmileKroeger/iconic-city

Cool! But I've got only shields full of metal or color instead of various coas.

This was made for the monthly challenge, and actually mixes three generators:

• a coat of arms generator I had started working on before hearing about the procedural city challenge, where my goal was to make coats of arms in an "iconic" fantasy genre, meaning representing a theme like "the seas", "nature", "industry", etc. The icons come are selected from the very excellent game-icons.net, and are associate to matching colors. The icons are svg, the rest of the shield is CSS.
• the city image is a bunch of svg colors that are then recolored in javascript. There are several "themes" to the cities (Dutch, German, French, Italian, Spanish), each corresponding to sets of building (houses, landmarks, towers) and color schemes. If I had had more time I would have drawn more diverse buildings (flat-roofed mediterraneans houses, half-timbered houses, churches with domes, ruins, more kinds of walls, ...), that would have made my towns more different from each other
• The name is pretty straighforward markov chains, built from lists of real city names, with special handling of suffixes (-dorf, -berg, -hausen...). I ended up only using the German names, their output was the best, though if I'd had more time I would (of course) have made them match the city style instead of having everything matched at random.

Now that I'm better at building dynamic stuff with SVG + javascript, I'll probably go back and use the same technique for making better coats of arms - making complicated shapes in CSS is a pain, but now I know how to make dynamic SVG well enough that I can just make elements in SVG and then recolor them.

(edit) Screenshots: http://imgur.com/a/u9zqZ (back from when I hadn't integrated the coat of arms and name yet)

Played a bit and I like it. Generator has a real potential as a part of old-style strategic game. It's rather slow, can you improve performance?