Explore Sofia.

In Sofia, Questo turns a walk through this destination into a self-guided city game. Pick one of 3 active Questo quests, follow clues on your phone, solve puzzles, and unlock a story as you move from stop to stop. There is no guide to meet and no fixed start time, so you can begin when the day works for you. Sofia works well for travelers who want more than a checklist of sights. Each quest gives you a route, a reason to look closer, and small challenges that make the city feel interactive. Use the game as a playful way to plan time around local places such as the Monument of Saint Sofia, the National Assembly of Bulgaria, and the National Gallery. It suits couples, families, groups of friends, and solo explorers who like flexible outdoor activities. Choose a compact set of walking games, pause whenever you want, and turn time in Sofia into a walk with a plot.