The Flood building at Powell and Market, 2008. The flood building is where Dasheill Hammett worked as a Pinkerton Detective before he wrote The Maltese Falcon. In the back of the building, on Ellis St., is John's Grill, where he often ate and where he has Sam Spade eat in Falcon. I ate there a couple of weeks ago, and it was great. Expensive, but worth it if you want a taste of old SF.