Design a massive but realistically ...

Design a massive but realistically buildable Minecraft Nether-roof transportation hub inspired by grand East Asian temple architecture. The build should look like something an experienced survival Minecraft builder could actually construct block by block, using only real Minecraft blocks, realistic block spacing, believable stair/slab geometry, and practical structural proportions. Avoid impossible curves, tiny decorative shapes that cannot be represented with blocks, overly smooth surfaces, or fantasy details that could not actually be reproduced in Minecraft. The entire complex sits on top of the Nether roof, surrounded by the flat bedrock landscape. In the exact center of the hub is a controlled opening through the Nether roof, but the opening should be relatively compact rather than e