dark art by Agustín Fernández, sci-fi style concept art landscape , megastructures sci-fi dark  pompeii colossal scale artstation, futuristic, technological, alien worlds, space themes, advanced civilizations, cybernetic style concept art landscape , megastructures sci-fi dark  pompeii colossal scale artstation, futuristic, technological, cybernetic enhancements, robotics, artificial intelligence themes, , surrealism, metaphysical, dreamlike, symbolic