build a massive fantasy tower as a ...

build a massive fantasy tower as a standalone structure very tall vertical tower extending upward as if it has no visible top add a large glowing blue crystal in the center include floating platforms, bridges and small structures around the tower add clouds or floating elements around the upper parts to give a sky or cosmic feeling use white stone, gold accents and dark blue roofs no terrain, no landscape, only the tower style: high fantasy, clean structure, detailed, strong vertical design, no randomness tower fades into clouds, no clear top, infinite vertical feeling