watercolor of an abandoned old mansion with cobwebs, broken windows, and dusty furniture. concept of decay

abandoned mansion cobwebs broken windows dusty furniture watercolor illustration old decay forgotten spooky atmosphere haunted eerie interior vintage historical decrepit ghostly nostalgic rundown architectural detailed intricate artwork painting gothic mysterious empty dark ghost creepy desolate unsettling historic derelict cobweb halloween horror scary gloomy watercolour aquarelle art ai generated