Thermae Grimbergen — Aquarius nude spa
Grimbergen, Flemish Brabant
A green wellness retreat north of Brussels, with a separate Aquarius nude section alongside a clothed spa area. Wood, Kelo and African Lodge saunas, a Roman steam bath and bathing facilities are arranged among indoor spaces and gardens.
Nudity policy
Separate nude spa area
Use Aquarius without swimwear, sitting on a full-body towel in the saunas. Dress rules change at the boundary to the separate Sabai swimwear area; wear a robe in shared restaurant and circulation areas as directed.
Aquarius is the nude section; the separate Sabai section requires swimwear. Both areas share changing facilities and are included in ordinary thermal admission, so change clothing when crossing the boundary.
Facilities
- Sauna: On-site facility; follow the dress rules for the particular zone and visit date.
- Steam room: On-site facility; follow the dress rules for the particular zone and visit date.
- Pool: On-site facility; follow the dress rules for the particular zone and visit date.
- Showers: On-site facility; follow the dress rules for the particular zone and visit date.
- Jacuzzi: On-site facility; follow the dress rules for the particular zone and visit date.
- Restaurant/Cafe: Restaurant, reception and some relaxation spaces require a robe or other cover.
- Parking: On-site facility; follow the dress rules for the particular zone and visit date.
Aquarius is the separate nude spa section. Sabai requires swimwear; both sections share changing facilities. Wear a robe in the restaurant and shared circulation areas as directed.
Access & visiting
Buy ordinary thermal admission or a day arrangement through the operator; no hotel stay or membership is required. Admission covers both Aquarius and Sabai, subject to each section’s clothing rules. Reserve treatments separately.
Age & supervision
The current internal rules admit children from 6 years with continuous parental supervision and a signed agreement at each visit. Respect the quiet atmosphere; ask reception about the current child-entry procedure.
Age policy sourceWhen to go
Open year-round; check current opening times and any maintenance notices before visiting.
Directions & Parking
Getting there
Navigate to Wolvertemsesteenweg 74, 1850 Grimbergen, Belgium. Follow signs for the named thermen reception, not a neighbouring hotel or recreation-area beach. The property marker identifies the spa itself; the operator’s street address is the best arrival destination.
Parking
The operator confirms parking on the property within walking distance of the entrance. Follow the signed thermen parking route and current instructions at the barrier; verify any charge when booking rather than assuming public recreation-area parking covers the spa.
Finding the naturist area
Enter through reception, pay thermal admission and use the shared changing area. Follow the signs for Aquarius, the nude spa section; leave swimwear off when entering that section. Sabai is the separate clothed section, so put swimwear on before crossing to it.
Where naturism applies
Aquarius is the nude section and Sabai the swimwear section. Reception, shared changing areas and restaurants have their own cover requirements; follow the signs rather than treating the whole property as nude.
- Bring a robe, a large sauna towel and slippers, or check the current rental options.
Access guidance checked 2026-11-12. Follow current signs and any instructions from the venue or land manager.
Sources & last check
Location, facilities and nudity policy checked against these sources on . This is a desk check, not an on-site inspection.
- Operator — facilities and photographs
- Operator — current dress code, ages and access
- Operator — address, arrival and tariffs
- Named property location reference
- Thermae Grimbergen — Aquarius nude section facilities
- Thermae — current internal age and supervision rules
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