. >> i actually have a record says that it was constructed here in 1861 by william mc elroy and moved across the street. let's see. these octagon houses were build by someone that said this was a better way and a craze swept the country and at one point there was five in san francisco. here is one of the two. here is another one. let's see. >> this is fung she. >> i think so. and here is one built in 1958 and it is occupied as a resident and you can take a look: green street and jones. >> across from one of the old fire houses. >> you folks chip in if you want to speak. >> and it's also used as a residence. >> the fire house. we will see another one in a second and not only do we have those in san francisco. here we have a hexagon building and truly a oddity and someone should have checked it in san francisco architectural digest and recently built. what do you think? in san francisco we have other shapes and there was the triangle cafe. it's on 17th -- >> (inaudible). >> 16th and it's right near the new mission bay. now one of the things that i found interesting is the value of the b