A couple years ago, a Japanese builder who goes by Talapz, created a LEGO Pop-up Kinkaku-ji, a Temple of the Golden Pavilion, and posted it on YouTube, which has gained over a million views. He is back and has created another pop-up model, the Todai-ji including the Daibutsu (Eastern Great Temple with The Great Buddha). This model took Talapz 9 months to create and used around 8800 pieces. When folded together, it is approximately 96mm thick and about 48mm opened. If you want to create your own, he has also provided instructions at the end on how to make your own popup model.