that are quite nice shapes… the cube with 2 direction twist is more interesting than the branched roof for me… i must have seen your website at some point very recently as i’ve seen that cube room outside of blenderartists… cool cool
the cube is a example shape in structure synth so it might have been that you have seen other renders of it or visited the site: http://structuresynth.sourceforge.net/
normally I like to make stuff like this from scratch but I really liked the spiral cube