The city, spread across 14 islands, exists as both a world capital of and a cultural icon often envied for its lifestyle. A cruise visit to the city uncovers the genius you might expect, manifest in the city’s parks, waterways, and urban design. But there is also something more. Stockholm was designated a European Green Capital in 2010 and has become a global leader in sustainable urban living. So as you walk the streets and whistle softly at the view, consider you may be witnessing the birth of something hinting at the future of the planet.