
National Sauna Week: wellness with great prizes
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From Monday 14 to Friday 18 September 2026, the Belgian Sauna Association is organising National Sauna Week. And of course, Thermae Boetfort and Thermae Grimbergen are taking part too!
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You can now also enjoy an Aufguss session in our private saunas! Just use the bucket of water with lavender essential oil next to the Finnish sauna to do your own Aufguss session.
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How does it work? Using the spoon, you pour some water on the stones. This causes the humidity in the sauna to rise, which makes you feel hotter. Not only does lavender smell absolutely gorgeous, it also has a calming effect, helping you to relax more easily. What’s more, it balances your emotions, has a positive effect on your airways and relieves fatigue.
Do you love lavender?

- Promo - Promo
From Monday 14 to Friday 18 September 2026, the Belgian Sauna Association is organising National Sauna Week. And of course, Thermae Boetfort and Thermae Grimbergen are taking part too!

- Promo - Promo
Visit Thermae Boetfort or Thermae Grimbergen in August and receive an exclusive voucher! This voucher lets you bring someone along to our sauna and wellness centre for free between 1 September and 16 October 2026.

- Sauna experience - Sauna experience
Not in the mood for crowds on this holiday? Treat yourself to a relaxing day at our green sauna estate, as Thermae Grimbergen is open on Saturday 15 August 2026 from 10:30 a.m. to midnight!
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