Turn Saint Charles Into a Game
Explore at your own pace with app-guided clues, puzzles, and hidden stories.
Questo turns Saint Charles, United States of America into family-friendly adventures, historical walks and story-driven quests you play on foot, following clues from one landmark to the next. No guide, no group, no fixed schedule, just you, your phone and the city.
How it works
All quests in Saint Charles
New Quests in Saint Charles: Be among the first to play
Try these quests in beta and help us make them even better.
Ways to explore Saint Charles with Questo
One app, one type of quest · different ways to play it.
As a scavenger hunt
Solve clues and puzzles at real Saint Charles landmarks. Race against the clock or take it at your own pace · and bring a group to compete for a spot on the leaderboard.
See all Saint Charles scavenger huntsAs a self-guided walking tour
A GPS-guided walking route with stories along the way. Play on your own schedule, stop and resume anytime · and once you've downloaded a quest, it works fully offline.
See Saint Charles walking toursCities nearby
Find a city nearby to play with your family and friends.
Explore More Cities
Discover quests and adventures in cities around the world
Frequently asked questions
What can I do in Saint Charles with Questo?
How many outdoor city games are available in Saint Charles?
Do I need to book an activity in Saint Charles in advance?
Questo turns Saint Charles, United States of America into family-friendly adventures, historical walks and story-driven quests you play on foot, following clues from one landmark to the next. No guide, no group, no fixed schedule, just you, your phone and the city.