Large circular Pokémon-style stadiu...

Large circular Pokémon-style stadium inspired by Winscor Stadium. Massive enclosed arena with a central battle field, surrounded by tiered seating. Exterior is tall and monumental with smooth curves and strong symmetry. Use quartz and white concrete for the main structure. Use cyan and blue glass for accents and lighting. Use dark deepslate and blackstone for lower walls and foundations. Interior seats in alternating white and blue rows. Front-facing main entrance with a wide archway and banners. Centered build, perfectly symmetrical. Very large scale landmark, suitable for a city centerpiece. Clean, futuristic Pokémon League aesthetic.