Embark on a quest around Zurich by solving clues help Einstein develop the famous Theory of Relativity, all with the help of your smartphone. Unlock new stories as you discover on your own Paradenplatz, St. Peter's Church, the Old Town, and more.<br><br>+ Find the real story behind Albert Einstein's General Theory of Relativity<br>+ Solve clues around town and discover other hidden gems<br>+ Explore Zurich in a unique and memorable way<br><br>Each clue will lead you from one place to another, giving you exact directions so you won't need a map, a GPS or a guide. When you solve the clues and guess the answer, the secret story of that place is unlocked. Start and stop whenever you want.<br><br>The tour will take you from 1.5 to 2 hours to complete, but there’s no time limit so you can finish it at your own pace. After you buy the quest, an access code will be delivered to you by mail. Go to the starting point and be ready to begin the adventure.