Artist makes backyard periscope surveillance system

200710031352 A Boing Boing readers says: "David Bynoe built a 20-foot-tall surveillance tower that is constructed out of wood and mirrors. The tower is tall enough and controllable enough that it can look down into the neighbors' back yards. Also check out his previous project of a set of hand carved wooden 9.5-foot wings that fold up into something backpack sized."

Includes video. Link