dark gothic tower 3d model

Octagonal dark post-apocalyptic refuge tower, 15 floors, low poly game-ready architecture, Roblox-inspired proportions, clean modular geometry, symmetrical structure, optimized topology. Strong vertical silhouette. Base podium with one single monumental front entrance only, wide central staircase, fortified walls, arches, pillars, cornices, corner towers, dark stone facade, black metal details, bronze-gold trims, warm amber window lighting. Mid tower with repeated residential modules and elegant gothic-victorian rhythm. Floor 8 as market level integrated into the tower massing. Typical residential floors with perimeter circulation, lateral stair and elevator cores, central block formed by 2 luxury apartments. Floor 13 mechanical level with dense machinery. Floor 14 technical mezzanine with metal bridges, pipes and cables. Floor 15 elevated two-level helipad. Somber, elegant, fortress-like, readable shapes, no collapse, no background, no characters.