Oradea’s big thermal waterpark with indoor and seasonal outdoor pools, slides, and saunas. Easy city access, best for families and rainy days. Year-round.

Year-round thermal pools and slides in Căciulata, near the Olt River. Timed entry for day visitors, easy access from DN7 and rail. Bring sandals and a towel.

Relaxed thermal bath complex in Sălaj with multiple outdoor pools and one indoor basin. Warm mineral water (about 29-34°C) and simple facilities.

Compact indoor wellness center in Băile Tușnad with a thermal-water basin, saunas, and kids pool. Good stop after Lake Sfânta Ana hikes. All seasons.

Germisara Resort & Spa at Geoagiu-Băi is a forested thermal hotel with indoor pools and seasonal outdoor bathing, easy drive from Deva. Bring sandals.

Aqua President in Băile Felix is a drive-up thermal complex with indoor-outdoor pools and slides, ideal for families, loud on weekends. Arrive early.

Afrodita Resort & Spa in Băile Herculane has thermal pools, hotel rooms, and a modern spa, a practical base for Cerna Valley walks. Weekdays feel quieter.

Therme București near Otopeni offers huge indoor palm halls, mineral pools, and saunas. Book lockers, bring flip-flops, expect crowds. Weekdays are calmer.