Dark mysterious atmosphere, gothic architecture, stone walls, vaulted ceilings, stained glass windows, rich wood accents, ornate metalwork, dim warm lighting, eerie shadows, mysterious corridors, abandoned asylum feel, distressed textures, worn wooden floors, peeling wallpaper, old hospital equipment, vintage medical furniture, gloomy color scheme, dark blues, deep reds, muted greens, ominous yellows, haunting purples, dramatic lighting effects, high contrast ratios, atmospheric fog, misty windows, spooky ambient sounds.