グーグル (椅子有り)
http://blog.livedoor.jp/loveai0221/archives/32355735.html
http://www.akiradrive.com/google-japan#Google

マイクロソフト (椅子有り)
http://www.mdn.co.jp/di/articles/2577/
http://www.businessinsider.com/a-tour-of-microsofts-truly-gigantic-sprawling-headquarters-2013-7?op=1/#e-conference-rooms-have-cool-illustrations-on-them-32