Clockwork horse sculpture at the Leanin' Tree Museum in Colorado. There are more photos of the sculpture in this steampunk-themed forum post. And here's photos of another clockwork horse sculpture.
Also from the collection of links, a Steampunk Abraham Lincoln costume, designed by Brandon Herren:
*Previously: Abe Lincoln, the steam-powered emancipator.
*Buy steampunk creations at eBay.