Thermal baths in Luxembourg
Luxembourg's thermal spring rises at Mondorf-les-Bains on the French border. As in neighboring Germany and Belgium, public sauna areas in Luxembourg are usually textile-free, while the pools need swimwear.
- Baths2
- Cities and towns2
- Water35 to 36°
- Hot rooms95°
City pages: Mondorf-les-Bains · Strassen
Baths in Luxembourg compared
Entry, swimwear rules, age limits and ticket type, side by side.
| Bath | Entry | Swimwear and rules | Age | Tickets |
|---|---|---|---|---|
| Les ThermesStrassen |
| Sauna area: "The sauna area is a naturist space", mixed every day; bathrobe required in the Wellness Lounge. Aqua World pool hall: swimwear required ("Staying in the pool area is permitted only in proper swimwear"). No women-only sessions in the current weekly hours; the operator's exceptional-hours list showed a ladies' morning (10:00 to 14:00) on 30 December 2025, so occasional ladies' sessions may be scheduled. | none stated | Day ticket |
| MONDORF Domaine Thermal (Wellness & piscine thermale)Mondorf-les-Bains |
| Swimwear required in the thermal pool (shorts above the knee tolerated); no topless sunbathing. Saunas are swimsuit-free: a towel may be worn, and in the TEKSTIILI sauna intimate parts must be covered with a towel or pareo. Swimwear is banned in the outdoor zone marked NUDITE; swimwear is allowed in the hammams. | none stated | Day ticket |
Every bath in Luxembourg
Open all year unless the hours say otherwise.
Les Thermes
Spa bath, Strassen · Phones and cameras not allowed anywhere in the complex.
A pool and sauna complex built by the Strassen and Bertrange municipal syndicate and opened in February 2009, with a naturist sauna area that is ticketed separately from the Aqua World pool hall.
MONDORF Domaine Thermal (Wellness & piscine thermale)
Thermal bath, Mondorf-les-Bains · The operator advises baths in the thermal pool of no more than 20 minutes, or 2 x 15 minutes, for medical reasons.
The wellness area of MONDORF Domaine Thermal in Mondorf-les-Bains, near the French border, sells 2, 3 and 4-hour and day tickets around a thermal-water pool heated to 36 °C with a circuit of massage jets.
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Questions about Luxembourg
Can you bathe in thermal water in Luxembourg?
Yes, at MONDORF Domaine Thermal in Mondorf-les-Bains, whose thermal pool is heated to 36 °C and has a circuit of massage jets. The operator advises staying in it no more than 20 minutes, or twice 15 minutes. Bus 413 runs there from Luxembourg City station in about 30 minutes.
Are the saunas at Mondorf-les-Bains nude?
Yes, the saunas are swimsuit-free, though a towel may be worn, and in the TEKSTIILI sauna a towel or pareo must cover your intimate parts. Swimwear is banned in the outdoor zone marked NUDITE and allowed in the hammams. In the thermal pool swimwear is required, and shorts above the knee are tolerated.
Can children go to Mondorf Domaine Thermal?
Only to the thermal pool. Children aged 2 to 15 may use it with an adult, and the rest of the wellness area is from 16.
Is the sauna at Les Thermes in Luxembourg nude?
Yes. The operator calls the sauna area a naturist space, mixed every day, with a bathrobe required in the Wellness Lounge. In the Aqua World pool hall swimwear is required.
Can children use the saunas at Les Thermes in Luxembourg?
No minimum age is published for the sauna area, and there is a kids and teens sauna price for ages 5 to 17. Children under 10 must be with an adult.
How do you get to Les Thermes in Strassen by bus?
Buses 8, 10, 11, 16 and 811, the Kirchberg to Steinfort line, stop at Barblé or at Strassen, Les Thermes.