Thermae Boetfort

Thermae Boetfort is a thermal bath and sauna complex at Sellaerstraat 42 in Steenokkerzeel, a municipality in Flemish Brabant in Flanders, Belgium. It sits in the grounds of the Boetfort castle estate, a short drive from Brussels Airport, which makes it one of the most accessible thermal destinations for travellers based in Brussels, Mechelen or Leuven. The setting is that of a park-side wellness resort rather than an urban day spa: a bathing and sauna landscape built around warm thermal pools, indoor and outdoor areas, and a series of themed saunas. Visitors typically spend three to five hours moving between hot and cool areas, resting in lounge zones and ending with a meal or drink on site. The complex is open daily from 10:30 to 23:00, with a midnight closing on Fridays and Saturdays. Entry to the baths is priced at roughly EUR 38.50 on weekdays and EUR 41.50 at weekends and public holidays, and entry to the baths cannot be booked in advance, so access is on a walk-in basis. At busy times such as winter weekends, queues and capacity limits can apply. Massages and other treatments are offered as paid extras and are generally best reserved on arrival or ahead through the venue. As with most Belgian thermal centres, the sauna areas follow a mixed, textile-free custom common in the region, which surprises some international visitors, so it is worth checking the house rules at the desk before entering. Towels and bathrobes are usually available to rent or are included depending on the formula chosen. The pairing of thermal water with a sauna circuit reflects the northern European bathing tradition that is widely popular in Flanders, and the complex positions itself as a half-day escape rather than a treatment-led medical spa. The nearby airport also makes it a convenient option for a long layover, provided enough time is left for the journey back.