IKEA Hammarby Sjöstad — Stockholm

IKEA's Hammarby Sjöstad store shatters the suburban big-box mould with its urban, multi-story format in Stockholm. At 54,000 square feet, it's 40% smaller than the REI flagship in Seattle but packs a circular materials showroom, a food lab restaurant, and Sweden's first IKEA sustainability exhibit. The store is 30% more energy-efficient than the average IKEA, thanks to integrated solar panels and rainwater harvesting. As a testing ground for every future concept before global rollout, it outperforms #9 REI by pioneering innovations like modular flat-pack housing displays that reach 2 million annual visitors.