• Bismarckplatz - Begin your adventure at Bismarckpl. 1, 69115 Heidelberg, Germany. Launch the Explorial app and input the 6-digit game code sent to you via text and Viator chat. The puzzles will guide you through one of Germany’s most renowned historic towns at your own pace.

Your first stop is Haus zum Riesen, a 16th-century Renaissance mansion located on the Hauptstrasse. Its intricately carved doorway and tiered facade make it one of the most exquisite buildings on Heidelberg’s most famous street.

Next, the app directs you to Universitätsplatz, the center of one of Germany’s oldest universities. Here, student life and city life have intertwined for over 600 years, surrounded by historic faculty buildings.

The journey concludes at the Alte Brücke, the Old Bridge over the Neckar River, providing the iconic view of the castle above and the town below, which has made Heidelberg one of the most painted cities in Europe.

Plan for approximately 2 hours. The walk is mostly flat through the old town, and the game saves your progress if you pause to explore.

• Free download of the Explorial App from your appstore (iOS or Android smartphone required)
• Points and scoring system: Compete between players of your group and beat the cities high score.
• Live Location: navigate within the map with marked locations. Always know where you are.
• Learn about the cities stories, history, and local legends
• Total flexibility: no waiting, start anytime, walk at own pace and do as many breaks as you want.
• Self-guided walking tour with interactive riddles, trivia challenges and photo tasks.

• Live-Guide: 100% self-guided; no one will meet you or join your group. Start anytime you want.
• Entrance fees are not required for this game. All puzzles relate to the public areas of the sights
• This is not an audio guide but an sightseeing, gaming and learning experience

Heidelberg has captivated poets, philosophers, and romantics for centuries. Now, it’s your turn to explore its charm from the streets.

This app-guided scavenger hunt leads you on a walking tour of Heidelberg, using phone-based riddles to navigate from one landmark to another. No guide is needed, and there’s no set start time.

• Discover Haus zum Riesen, Universitätsplatz, and the Alte Brücke — each a part of Heidelberg’s rich history
• Explore the old town at your own pace, with guidance solely from the app
• Perfect for couples, families, and groups of any size

Available in 24 languages, including English, French, German, Spanish, and Italian. View the complete list when booking and select your preferred language when starting the game in the app.
Approximately 2 hours - suitable for any group size.

Mark Twain adored this place, and he was right.

• Max 15 people per booking. For larger groups, make multiple bookings.
• After booking you receive a text message and a Viator message with your game code. Download the Explorial app from your appstore. Open the app, enter your 6 digit game code
• Weather & Health Guarantee: If bad weather or illness prevents you from starting the tour, you can simply reschedule it for another day. You can also rebook to a different city or request a refund
• Smartphone required: Bring your own fully charged smartphone with an active mobile data connection to the start of the tour. Please disable any VPN and avoid city Wi-Fi, as these will cause the app to malfunction or disconnect.
• Recommended attire: It’s best to wear weather-appropriate clothing and comfortable walking shoes — approx. 2 hours of light walking

For a full refund, cancel at least 24 hours before the scheduled departure time.