Atomium
Atomium was my classic space contribution to Stijn's Blast from the Past round of the Starfighter Telephone Game, and Simon's Moonbase V collaboration.
2015

Lightning Construction Video (full walk-through video is here)

Construction Video
There's also a real-time construction walkthrough on YouTube with commentary at http://youtu.be/w1UFBmAib9A.
The music in this lightning-speed cut is from Gradius V, as composed by Hitoshi Sakimoto.