art nouveau cthulhu castle wall of hieroglyphics depicting the arrival of the octopus demon, and an ironpunk eyeball tower and stone catholic dragon church temple in the mountains of antarctica, upward cinematic angle, by bill sienkiewicz, rodney matthews, frank frazetta and michael whelan, foggy atmosphere, striking composition, octopus faces, skulls, evil symbols, intricate, strange, ornate, digital art, hyperdetailed mixed media painting, colorful, hyperrealism, photorealism, high contrast 8k