Stockholm is located on Sweden's south-central east coast, where Lake Mälaren flows into the Baltic Sea. Because the city center resides on multiple islands, over 30% of the city is waterway. Another 30% of Stockholm is parks and greenspace.

Stockholm was Europe’s first “green capitol,” based on how the city deals with climate change, local transport, public green areas, air quality, noise, waste, water consumption, waste water treatment, sustainable utilization of land, biodiversity, and environmental management.