Soltau Therme is the town's brine spa and pool complex, with indoor and outdoor water, sauna areas, and enough space to work as a rainy-day fallback. It is not grand, but it fits the Lüneburg Heath rhythm: cycling or walking first, warm water afterwards.
For families using Soltau as a base, it is a useful second anchor after Heide Park. For spa purists, nearby Bad Bevensen has a stronger health-resort identity.