Build a large dark gothic cathedral...

Build a large dark gothic cathedral throne in a hellish fantasy style. The build is fully symmetrical and made mostly from blackstone, deepslate bricks, polished blackstone, basalt, and obsidian. Create a giant gothic arch at the center, very tall and wide, supported by thick vertical pillars on both sides. The arch frames a central elevated throne platform. The throne platform is circular or octagonal, built in multiple tiers using stairs and slabs. Place a dark stone throne or altar at the top. From the throne platform, add long flowing red drapes that cascade down the front and sides like curtains or a gown. Use red concrete, crimson wool, red banners, or nether wart blocks to simulate fabric. Add a grand central staircase leading up to the throne. Add smaller symmetrical staircases