A medieval fantasy tower in Minecra...

A medieval fantasy tower in Minecraft featuring a circular 11x11 base, a high level of detail, and a professional building style. The tower must be built using only actual blocks from Minecraft version 1.21.11, and the description should serve as a clear guide for in-game construction. Use stone bricks, creating a strong sense of depth by utilizing stairs and slabs to generate shadows and texture. In the center of the tower, include a vertical magical energy core made of blue-tinted glass, with a hidden light source (sea lantern) behind it to create a blue glow effect (without the beam of a beacon). The glass should be slightly recessed to add depth. Frame the core with darker blocks, such as obsidian or deepslate, to increase contrast. The tower walls should feature small medieval-st