Artemista is a cultural platform created in Barcelona that develops self-guided urban routes and artistic experiences mediated by an artificial intelligence avatar called Laia, combining contemporary art, poetic narrative, and technology. The project explores new forms of relationship between citizens, public space, and cultural experience. Through routes, creative kits, and objects inspired by the urban landscape, the project seeks to transform the way we inhabit and observe the city. Artemista develops immersive experiences that connect memory, imagination, and collective participation, proposing a more sensitive and critical approach to the contemporary urban environment.