Progressing beyond Art Masterpieces or Touristic Clichés: how to assess your LLMs for cultural alignment? - António Branco; João Silva 004; Nuno Marques; Luís Gomes 002; Ricardo Campos 001; Raquel Sequeira; Sara Nerea; Rodrigo Silva; Miguel Marques; Rodrigo Duarte; Artur Putyato; Diogo Folques; et al. (CoRR, 2026)