ordinariarily laminated grass -- it has a 090 tempered piece on the bottom. >> it is remarkable to walk in. the stairs is in front of you and it's transparent, maybe a little bit greenish, maybe, directly in front of you, and it's all glass. beautiful. >> we're doing a lot of areas where you're walking on -- bigger pieces where it's not supported quite so well, we use an inch and a half so you've got three layers of glass, and you can dance on it or whatever el else. fluid, as a disco bar near the four seasons on mission street for all you younger people. and they've got a lineup to get in there, one of those. and they have this dance floor that's covered with this inch and a half glass. and lights underneath. and it's very impressive. >> i think it's the indian reservation just built a projection of glass over the grand canyon. >> yes. >> and it has a glass floor, i understand. >> yes. >> read anything about that? >> i showed the picture to my wife, and she turned white, and says i'm not going. >> [laughter.] >> so like 2,000 feet straight down on a glass floor, wow. >> but it's perfec