Stockholm's good looks spread across 14 islands, linked by dozens of photogenic bridges. Exploring the diverse, distinct neighborhoods is a joy. Chief magnet for visitors is Gamla Stan (Old Town), Stockholm's medieval heart. Sure, it's a little touristy, but this cobblestoned collection of narrow alleys, rainbow-hued buildings, and postcard-worthy squares rewards ramblers.
A quintessential Stockholm experience is to rent a bike to explore Djurgården - this huge park is a city oasis brimming with first-class attractions and garden cafes. Skansen is the world's oldest open-air museum, and Junibacken honors Pippi Longstocking, plus there are collections that span all interests, from modern art to astounding sunken treasure, by way of Vikings and 1970s super-group Abba.