The Greek government has noticed a sharp rise in American visitors after the release of Christopher Nolan's film L’Odyssée, which led to a 151% increase in flight reservations from the United States in the weeks following its launch. This surge has prompted the Greek Ministry of Tourism to adjust its strategy, aiming to attract fewer but wealthier tourists. Although the film was not shot in Greece, it has still had a noticeable effect on tourism. Direct flights between the United States and Athens have increased from 83 in the summer of 2025 to 102 in 2026. The impact of the film is most visible on the island of Ithaca, where hotel occupancy rates have reached record levels. The increase in American tourists has also led to a 72% rise in e-SIM purchases in Greece compared to the previous summer. Tourism guides in Athens report that American visitors now make up half of all tourists and are known for being generous with tips, which can significantly increase the income of local service workers. The rise in American visitors has raised concerns about over-tourism in Greece, which receives around 40 million visitors each year—four times its population. To manage this, the government has introduced measures such as visitor quotas at the Acropolis and a 20-euro landing tax on popular islands like Santorini and Mykonos. American tourists, who spend an average of $1,200 per visit compared to $500 for European visitors, are viewed as a possible solution to the economic and environmental challenges caused by mass tourism. American films set in Greece, such as Mamma Mia!, have also played a role in introducing the country's culture and history to a global audience. While the increased American presence has brought economic benefits, it has also sparked discussions about the need to balance tourism with the preservation of local culture and natural resources.