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

9. Reykjavik, Iceland — Geothermal energy and nature-first tourism

Reykjavik’s energy system is heavily powered by geothermal and hydro sources, which reduces the city’s emissions from heating and electricity compared with fossil-fuel-dependent places. That energy base supports eco-conscious services such as low-emission public transport and sustainably managed spas. Visitors can opt for responsibly operated eco-tours to nearby natural attractions, and many operators focus on minimizing landscape impacts and supporting local communities. Sustainable lodging in Reykjavik often highlights geothermal heating, water-conservation measures, and local sourcing for food. Bookable activities that align with low-impact travel include guided glacier-walk alternatives that emphasize conservation, eco-friendly whale watching with strong animal welfare policies, and geothermal pool visits that promote responsible use. Travelers should verify operator sustainability claims and seasonal availability "As of Nov 2025" before booking.