Design a single futuristic sky-city...

Design a single futuristic sky-city complex consisting ONLY of one central spire tower and its surrounding circular plaza rings, fitting exactly within a 250x250 block square footprint, height unrestricted, perfectly symmetrical on all sides (radial symmetry around one central vertical axis). At the very center, build one extremely tall, slender spire tower, about 30-35 blocks wide at its base, tapering upward through 5-6 setback tiers. Core material: iron block and smooth quartz block, clad in polished diorite and light gray concrete panels. Wrap the facade in tall vertical strips alternating tinted glass and light blue stained glass, backlit internally with hidden sea lantern blocks to simulate glowing tech panels running the full height. Embed horizontal rows of lit copper b