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Spa Thermal Lédonia

The thermal spa of the Lédonia baths in Lons-le-Saunier, in the Parc des Bains of the Jura's county town, sells single entries to its Aqua-détente area. The area has one indoor pool of thermal water heated to 32 °C, looking out over the park, with a hammam, a sauna and an outdoor terrace.

WhatThermal bath, Lons-le-SaunierFranceNatural thermal water
WhenOpen all yearIndoor pool of thermal water heated to 32 °C; the water leaves the Lédonia catchment at 17 °C
Hot roomsSauna included in the entry, steam room included in the entry
Getting there Car Train
CostEntrée Aqua-détente, adulte (Aqua-détente entry, adult)€17As of Oct 2026
AccessThe Aqua-détente area holds at most 45 people and entry can be refused when it is full.14+

Getting in

Public transport
Lons-le-Saunier station (SNCF).
Address
Parc des Bains, 39000 Lons-le-Saunier

Entry, hours and rules

Entry
  • Entrée Aqua-détente, adulte (Aqua-détente entry, adult)€17
  • Entrée tardive (late entry) (Monday to Friday from 17:30)€11
  • 14-20 ans et étudiant (ages 14 to 20 and students) (With proof)€11
  • Entrée Aqua-détente + serviette (entry with towel)€19
  • Entrée Aqua-détente + serviette + peignoir (entry with towel and bathrobe)€22
Hours
  • Mon10:00-19:00
  • Tue10:00-19:00
  • Wed10:00-19:00
  • Thu10:00-19:00
  • Fri10:00-19:00
  • Sat09:00-19:00
  • Sun09:00-13:00
Swimwear and rules
Swimsuit required; swim shorts and board shorts are not allowed. Swim cap compulsory in the Aqua-détente area and non-slip sandals throughout.
Children
14 and over. Minors must come with an adult and bring ID; treatments from 16.
Tickets
Day ticket, no time slot
Official site
valvital.fr
Facilities
Indoor poolSaunaSteam roomChanging roomsTowel hire

About Spa Thermal Lédonia

The Romans called Lons-le-Saunier Ledo Salinarius, the salt town, and the baths still draw salty water: it comes from the Lédonia catchment at 17 °C, rich in sodium chloride and magnesium. A hydrotherapy centre has stood here since 1892, in the middle of the 7-hectare Parc des Bains, which the Terra Salina salt-heritage network credits to the architect Henri Michel. The building is arranged around a central porch with columns, and the park around it holds rare trees from five continents.