build a massive fantasy tower as a ...

build a massive fantasy tower as a standalone structure very tall vertical tower with detailed layers, elegant and complex design add a large glowing blue crystal in the center of the tower include floating platforms, small side structures and bridges attached to the tower use white stone, gold accents and dark blue roofs no terrain, no landscape, no ground decoration, only the tower itself style: high fantasy, highly detailed, clean structure, no randomness focus on vertical design, central crystal, cinematic fantasy tower