The Winchester Mystery House is one of my absolute favorite Bay Area tourist-attractions. Built by the widow of the Winchester rifle fortune, the old barn house had over 800 rooms added and removed over several decades in a crazed bid to confuse the ghosts of dead Indians slain by Winchester rifles whom the widow believed to be haunting her.
On this blog a (former?) Winchester Mystery House tour guide posts dozens and dozens of photos from inside and outside the house, including a bunch of off-limits stuff I'd never seen before (check out this room full of heads from a now-retired wax-museum!). The comment-boards on the posts are full of cool minutiae about the Mystery House, too.
(Thanks, Brandon!)
Update: A reader points out that there's loads more Winchester Mystery House pix on Flickr.