The document proposes using nanobots inspired by bioluminescent organisms and cockroach mites to automate the maintenance of large buildings. Nanobots would be programmed to clean exterior surfaces using energy harvested from particles and glow at night through bioluminescence, creating a sparkling skyline. This would provide a self-sustaining and scalable solution to the expensive and dangerous task of building maintenance while also creating an aesthetically pleasing visual effect. However, challenges remain in controlling bioluminescence, advancing nanotechnology, and ensuring durability.