11 Carbon-Neutral Cities in Europe Leading the Charge in Green Tourism

3. Tallinn, Estonia — Walkable Old Town and a 15-minute city vision

Tallinn is increasingly framed around compact, accessible neighborhoods and a push to reduce transport emissions. As of Nov 2025 municipal plans reference a 15-minute city concept that prioritizes local services, bike lanes, and low-emission public transit to shorten everyday journeys. For visitors, the Old Town’s pedestrianized streets are naturally low-impact, and Tallinn’s electric buses and trams make connecting to museums and waterfront areas straightforward. Look for accommodations that advertise energy-saving measures and local-sourcing policies; several guesthouses and boutique hotels work with community food producers for breakfast and restaurant menus. Bookable green activities include guided walking tours focused on heritage and urban sustainability, electric harbor cruises that use low-emission boats, and tech-forward experiences that demonstrate how the city measures emissions. Tallinn’s blend of medieval charm and modern sustainability planning makes it a strong option for travelers who want both history and credible climate action. Check municipal websites for the latest transit passes and low-emission service offerings.