The Spa of Nagyerdõ has been highlighted medicinal bath since 1960. There are four thermal pools in its domed hall, several rotary pools, and thermotherapeutic chambers in an area of 11 000 m2.

There are two separate specially designed pools for hydrotherapy with weights and underwater gymnastics, very popular among the patients. The water resort next to the spa invites visitors where 8 pools are spread out in an area of 8 hectares of parkland, including a large pool for swimming, a whirlpool, a plunge bath, a wading pool, separate pools for little children and two medicinal baths.

There is also an indoor swimming pool and sauna with sun beds. The temperature of the water in the pools ranges from 26° to 38 °C (79° to 100° F). The imposing spa with its thermal baths and hydrotherapeutic activities is open all year around and the water resort welcomes visitors seeking treatment or rest from May till September.

There are 40 kinds of treatment available at the establishment under the supervision of 3 specialists and a staff of 50 medical care workers. A further security to those requiring treatment are the well-equipped clinics of the Medical University neighbouring the spa, which provide the professional background for these activities. Traditional, hydrotherapeutic, and natural treatment rests on three basic pillars of healing: prevention, therapy, and rehabilitation.