Escher's building in origami

Some people redraw Escher's artworks with computer, the others create woodcarvings based on Escher's lithographs, but Ingrid Siliakus crates Escher's buildings using paper. I don't know how this kind of art can be called. I think it's a branch of origami.

UPDATE (thanks to lispnik):

This kind of art is called kirigami that is variation of origami, where the artist is allowed to make small cuts in the paper.

Below you can see some Escher-like kirigami works with respective originals.

Balcony

Relativity

Convex and concave

These images are close to originals by M.C. Escher. More such style origami constructions can be seen here http://haha.nu/amazing/unique-paper-cut-artworks/

Escher's "Curl-up" in paper

Tomohiro TACHI

This is origami version of M.C. Escher's lithograph "Curl-up" (1951). Author created four copies of a strange creature which turns into roller and sweeps away. In comparison, you can see original lithograph image at top right.