Tangential to Origami-Sites to Browse
http://www.chrisbosse.de/ This is Digital Origami a site that is mostly conceptual architectural design. It has a lot of nifty ideas and eye candy.
I found the above site at http://atelier-ad.blogspot.com . It is written by Michelle Linden an Architect from Seattle. It has a lot of great finds and links. This is a design blog and the aesthetic makes me think of Dwell magazine. She is doing a great job.
http://www.normalgroup.net/origami/index.htm Architecture firms entry that has a very interesting desing concept.
http://www.industrialorigami.com/technology/how.cfm A company that focuses on laser cutting flat metal sheets to create stuff.
http://members.fortunecity.com/ymahgou/courses/design1/OrigamicArch.html This shows students of an architectural professor from Kuwait creating origamic-architecture pieces. I especially like the landmarks.
Pictures taken of the Festival of Origami Architecture at the National Building Museum. These show a young girl who attended and a large variety of origami architecture and pictures of a huge crane being made. There are also photographs of huge origami-architecture pieces made in sequence. http://members.cox.net/csandy/Images/20040410_Origami/
Depending on construction it may be pushing it to call it origami, but I LOVE IT. The geometry is very cool.