Stockholm, Sweden

Spread across fourteen islands, Stockholm is widely regarded as one of the most environmentally friendly cities in Europe and celebrated as an international role model for climate action, having taken multiple measures to ensure a net positive impact. The Swedish capital uses renewable energy sources and recycles 99 per cent of the city’s solid waste. It also has one of the cleanest -and tastiest -- tap waters in the world, so there’s no need to buy bottled water.

Since the city is relatively compact, there are options to explore it more sustainably, with a great public transport system and many sights within walking distance. The city offers a community bicycle programme that allows people to rent one of 1,000+ bicycles that are scattered throughout Stockholm. Visitors can also explore the city from the water: an evening city kayaking tour offers the unique experience of paddling through Stockholm’s waterways to admire the architecture and landmarks, ending with a traditional Swedish meal.