First proposed by the American physicist Gerard O’Neill in the 70s, an O’Neill Cylinder is a large tube, pressurised with an atmosphere, and spinning to create artificial gravity. The hull features alternating strips of “land” and transparent windows, allowing sunlight to be reflected inside from large mirrors. The cylinder has become an iconic design, familiar from a raft of TV, movie, and videogame depictions of mankind’s future. Ralf Langer has built a beautiful LEGO version of an O’Neill-based space colony, using microscale to ensure his space settlement features fields and trees, flowing rivers, and towering cities. The rings supporting the curved land panels have technical-looking greebles, and the entire creation looks much bigger than it really is. This is epic LEGO sci-fi, depicting a future I’d love to see.