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Visitor Center at Gerolsteiner

Who Actually Found the Water?

In the 1880s, the geologist Wilhelm Castendyck set out to find natural carbonation and discovered the first Gerolsteiner mineral water spring. He took a sample of the water to Prof. Dr. Carl Remigius Fresenius, the most renowned chemist of his time and founder of the Fresenius Institute. Analysis of the sample revealed that the water was full of natural carbon dioxide and rich in valuable minerals. The Gerolsteiner brand was founded on this basis on 1 January 1888.

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Come explore our interactive exhibit to learn how the story of Gerolsteiner mineral water unfolded, what makes our mineral water so special, and how ordinary precipitation turns into precious mineral water.

How does Mineral Water get into the Bottle?

Staged cave landscape with rocks, tree stumps and colorful dinosaur eggs in front of a luminous underwater or fantasy backdrop.© Gerolsteiner Brunnen

We would like to invite you to a guided tour of our exciting new interactive experience. Whether you are visiting as a family, with a school class, or as adult explorers, we have something for every generation.

Joined by our dinosaur characters G-Rex, Mina, and Sparky, you’ll embark on a fun-filled journey into the world of Gerolsteiner mineral water. Children can learn in a playful and interactive way how our water is sourced, while adults discover fascinating background information and interesting facts about its origin, quality, and minerals.

From the origins of the Gerolsteiner spring to the finished bottle of mineral water, you’ll experience, step by step, what makes our water so unique. Questions like “How does the carbonation get into the bottle?”, “What do volcanoes have to do with our water?”, or “Why is our water so rich in minerals?” are sure to be answered during your visit.

Has this sparked your curiosity? Then why not pay a visit to G-Rex and his friends at our new Gerolsteiner interactive experience? We're looking forward to seeing you!

Our Guided Tours

32people

We can accommodate groups of up to 32 people at a time in our interactive experience. Smaller groups, school classes, and individuals are, of course, also welcome.

90minutes

A journey of discovery through our colorful world of interactive experiences takes about 90 minutes

1journey

An exciting journey through the history of Gerolsteiner and the world of minerals awaits you

In the Mood for some Exercise and Action?Our G-Rex Route:

  1. Our G-Rex Route: “Oh no—G-Rex has disappeared!” Now it’s up to you to help Mina and Sparky find him. On an exciting loop trail around Gerolstein, you’ll discover what happened to G-Rex through a series of fun activities. With a little luck, curiosity, and some smarts, you might even figure out where he’s hiding by the end!

  2. Sternpark Route: In the Footsteps of Wilhelm Castendyk – join our founder Wilhelm Castendyk and chemist Carl Fresenius on a journey of discovery through the fascinating Vulkaneifel region. Learn more about what makes our mineral water special and the history of our company. After a guided tour of our interactive experience, you can experience the development and tradition of our brand up close on the interactive hiking trail. ​​​​‌

Opening Hours and Tours

Immersive exhibition space with a forest backdrop, tree trunks as seating and presentation elements, and the inscription "Dive into the nature of the Eifel".© Gerolsteiner Brunnen

Our guided tours are available during the following hours:

Daily: Monday through Thursday

9:30 AM – 11:00 AM

11:30 AM – 1:00 PM

By request: Monday through Thursday

2:00 PM – 3:30 PM

Every Friday

10:00 AM – 11:30 AM

Please note that our guided tours are only available via prior reservation. Your reservation is not confirmed until we send you a separate email. Please understand that our interactive experience is not wheelchair accessible and dogs are not permitted.

Book now

By clicking on the link below, you will be taken to the booking function of Calendly LLC. Information on data processing by Calendly LLC can be found in the window. Further information on Gerolsteiner's data processing when using the function can be found in our privacy policy.

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We recommend drinking 2 liters of mineral water on a daily basis, in addition to a well balanced diet and an active lifestyle.

©2026 Gerolsteiner Brunnen GmbH & Co. KG