I'm more impressed with the windows. Curving wood and glass can be tricky. I've seen a curved door before, but not with curved glass in it.
Despite the pixelation casting doubts on the materials, it is actually made from real, mortar, wood and glass.
https://en.m.wikipedia.org/wiki/From_the_Knees_of_my_Nose_to_the_Belly_of_my_Toes
More pictures: https://www.alexchinneck.com/from-the-knees-of-my-nose-to-the-belly-of-my-toes
The two richest people on earth whining about income distribution being unfair.