Nestled on the edge of the Geneva countryside, near the Laire Valley nature reserve, the Domaine de la Mermière invites you to an exceptional Halloween experience!
At this family-run organic estate, the Batardon family shares their passion for vines and winemaking. For Halloween, discover the estate in two different ways: outdoors among the vines, and then in a dazzling fluorescent world!

All aboard the trailer—next stop, the vineyards!

The adventure begins on a genuine grape-harvesting trailer. Parents and children climb aboard together to head to the Soral vineyards and take in the scenery surrounding the estate.
Near a traditional vineyard hut and the Laire Valley, the Batardon family will introduce you to their vineyard, their organic production methods, and their commitment to sustainability. But you haven’t come just to admire the view...

First candy hunt: an adventure in the vines

Once you arrive at the vineyard, it’s time for the first candy hunt! Parents and children team up to search for treats hidden among the vines—a wonderful Halloween moment for the whole family, surrounded by nature.
Then, hop back on the trailer to return to the estate... A second adventure awaits!

Second hunt: kids challenge their parents in a fluorescent world!

Back at the estate, the atmosphere shifts completely: get ready for blacklights and fluorescent colors! This time, the roles are reversed...
With the help of our activity leaders, each child crafts and decorates a glow-in-the-dark Halloween treat, then hides it somewhere in the fluorescent wonderland.
Now it’s the parents' turn! They’ll need to keep their eyes peeled to find the glow-in-the-dark treat their child has hidden.

Time to taste the estate’s wines!

After these two adventures, adults can discover the estate’s wines during a guided tasting session with the Batardon family. Whether traditional, exuberant, or expressive—and with some made without added sulfur—they reflect the terroir and the family's commitments.
Children can enjoy a glass of homemade grape juice.
Charcuterie and cheese platters are also available as an option.