Overview

• The summer campaign runs from June 17 to August 17, 2025, and has grown from about 30 pilot initiatives in 2024 to roughly 90 sustainable actions this year.
• Tourists arriving by train or electric car can claim benefits such as discounted tickets at the National Museum, free bike rentals and complimentary meals.
• Flyers become eligible by showing proof of a paid sustainable aviation fuel surcharge offered by participating airlines.
• Visitors who stay four nights or more earn further perks to encourage longer, low-carbon trips.
• Lyon and Bremen have rolled out comparable schemes, highlighting a wider trend of cities promoting eco-friendly tourism.