
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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Refresh and recharge this spring break at our beautiful castle estate!
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This spring break, why not escape the cold and warm up at our stunning castle estate? Discover our saunas, our immersive experience programme, and our wide range of Aufguss, scrub and relaxation sessions.
Is this your first time? No problem! During an Aufguss session, our sauna master or Aufguss master pours water infused with essential oils over the hot stones (or uses an ice ball), which instantly raises the temperature and humidity of the sauna. The sauna master then wafts the fragrant steam over your body using a towel for an even more intense experience. This is both exhilarating and deeply relaxing, and has a positive effect on your airways!
In the steam bath, you can join one of our scrub sessions, where you’ll be given an exfoliant like salt to scrub your skin. Here, too, the sauna master uses a towel or a fan to waft the warm air over your body.
We also offer relaxation sessions, such as halotherapy and sound bowl sessions. Our halotherapy sessions are held in a custom-built salt room, where the walls, floors, and ceiling are lined with salt and medicinal salt is diffused throughout the cabin. This works wonders for your skin and airways, and leaves you feeling totally relaxed. The sound bowl sessions are held in the relaxation room above the Silence Bar. The sounds of these ancient bowls help to balance both body and mind.
Each of these unique experiences will transform your day at the sauna into a mini wellness retreat. Will you join us?
During spring break, Thermae Grimbergen is open from 10:30 am to 11 pm on Sunday through Thursday and until midnight on Friday and Saturday. Plenty of time to stop by for a day (or more) of total relaxation in our thermal baths!
Discover our special package deals and pick your favourite!

- 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
Pure relaxation is always at the heart of what we do, and that’s no different on public holidays. Thermae Boetfort is open on 15 August, the perfect day to slow down completely. Will you choose peace, warmth and pure indulgence on this holiday?
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