A massive hybrid structure combinin...

A massive hybrid structure combining a medieval fortress and an industrial factory. The build should feature a large, open central base (hub) designed for merging multiple modules and expansions. Use a dark color palette primarily consisting of Deepslate blocks and standard Clear Glass. The structure should have two main floors, with the upper floor featuring an open-concept or semi-covered design rather than being fully enclosed. Keep the details clean and architectural rather than overly cluttered, focusing on a grand scale and functional space for a central command center.