realistic illustration, 
A futuristic vision of a re-imagined version of an expansive Roman bath-house, steaming hot tubs, people bathing in artificial waterfalls, rain-style showerheads, lounge chairs, people in bathing suits relaxing and soaking and bathing in various gorgeous facilities, aesthetic tile work, mosaic walls, a vision of a relaxing facility with people using varied water works, elaborate large indoor facility with different levels and zones, potted plants, glass brick sectional walls, 
perfect background, 
flawless, ultra detail, insane quality, perfect, 
highest quality