The fictional town of Portorosso in the movie Luca is not based on a single town, but is a high-value "love letter" to the entire Ligurian coast, specifically a blend of Monterosso al Mare and Porto Venere. Director Enrico Casarosa, who grew up in the region, infused the film with the vertical architecture and vibrant pastel colors characteristic of all five Cinque Terre villages. However, fans often find the most striking physical resemblances in Monterosso, the largest of the five, with its prominent beaches and town square. The film also pulls inspiration from the "Città Vecchia" (Old Town) areas of Genoa. For a premier 2026 movie pilgrimage, many travelers start in Monterosso for the "Portorosso vibe" and then take a boat to the nearby Porto Venere to see the dramatic sea caves and stone churches that mirror the hidden underwater world inhabited by Luca and Alberto.