A simple dome structure built from interlocking blocks. Each block is is a separate model allowing different configurations. A 'one-piece' model is also included in the configuration shown in the images.
All models were producing using Solidworks and are parametric models at their source. For those mesh modelers that have not come across parametric modeling... think Photoshop(bitmap) vs Illustrator(vector). Parametric models have absolute detail and therefor I can provide any of my models in almost any polygon count you desire.
Also note that these are models only. Any textures or colors pictured are basic materials assigned by the Solidworks renderer and not present in the file. (unless you request a Solidworks format)