Structure Synth – Generated structures

Paul writes –

Structure Synth is an application for creating complex three-dimensional structures using simple rule sets. Using a few line of code, with statements condensed to a few characters, iterated multiforms can be generated consisting of thousands of individual objects. Developed by Mikael Hvidtfeldt Christensen, this free software is a direct attempt to produce a 3d version of Context Free..

From Beyond the Beyond.