Thermen Soesterberg
Soesterberg, Utrecht
A woodland wellness resort at Soesterberg, combining themed saunas, warm pools and a natural swimming pond. Wood-fired and herbal sauna experiences, garden spaces and a sauna theatre make this a place to spend several hours rather than a quick sauna stop.
Nudity policy
Textile-free except swimwear days
The resort’s normal sauna and bathing policy is textile-free. Remove swimwear in the designated wellness facilities, sit or lie fully on a large towel in the sauna and wear a robe in restaurant or shared relaxation areas as directed. Check the date-specific swimwear policy before reserving.
Every Tuesday is a compulsory swimwear day. Outside the scheduled swimwear days, the sauna and bathing facilities operate textile-free.
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.
This listing identifies the textile-free spa experience. Separate clothed zones and compulsory swimwear dates are described in the policy notes.
Access & visiting
Book a day, timed or evening thermal admission through the operator. No hotel stay or club membership is required. Choose a textile-free date when the calendar offers compulsory swimwear sessions, and reserve any treatment separately.
Age & supervision
The current FAQ permits visitors from 12 years. Visitors aged 12–18 must be accompanied by a parent or guardian; Berendonck also asks for identification. This is a quiet wellness setting rather than a children’s leisure pool.
Age policy sourceWhen to go
Open year-round; check current opening times, maintenance notices and the dated swimwear calendar before booking.
Directions & Parking
Getting there
Navigate to Frits Koolhovenweg 8, 3769 TR Soesterberg, Netherlands. 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
Use the free thermen car park on Frits Koolhovenweg. The operator says a parking token is issued when checking out so you can exit the barrier. Do not park in the neighbouring residential streets.
Finding the naturist area
Check in at the main thermen reception, change in the lockers/changing area, shower and enter the signed sauna and bathing route. On a normal textile-free day, leave swimwear in your locker and use a towel in the sauna. The nude facilities are inside the managed resort, not an adjacent public lake shore.
Where naturism applies
The dress policy applies inside the booked wellness facilities. Public access roads and neighbouring recreation areas are outside the spa; scheduled swimwear days temporarily change the rule throughout the resort.
- 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
From other visitors
Loading comments…
Your comments
Been here? Share your experience, a useful tip or a detail that could help the next person.
Manage comments