For this model, I used a 28"x 40" (700 mm x 1000 mm) sheet of elephant hide paper, where I folded a grid of 64 by 92 squares.
The towers and central structure consist of a series of 90-degree pleat intersection blocks. The walls are built by using the same folding techniques, but folding the pleats alternatively in both sides of the paper. Once all the blocks are folded, they are then popped up or down. Here are two pictures of the model before becoming 3D, front side and back side.
I made a video demonstrating how to fold the 90-degree pleat intersection blocks, and another one with the castle tessellation, from 2D to 3D. Here they are:
I would like to thank the very talented band Rio for giving me permission to feature their song Curvando el tiempo as a sound track. You can listen and download more Rio's songs from http://www.riosonico.com/ or from http://riosonico.bandcamp.com/.