Three-dimensional object made of one A4 paper

A 18.2 cm tower made of paper. It seems to be using glue as expected but it is a surprise technology. There seems to be various ridiculous other things.

Details are below.
Paper bird. How are you standing.


The skeleton is not only cut away but it is in the box properly.


Looking up it is like this. If you touch it badly it will tear.


It is not a piece of A4 paper, but it is a staircase made of paper. I do not know if I can stand the weight of a person.


Other than these are from below.
Peter callesen