2nd biggest mineral hot springs in Europe. The Turks built baths when they occupied the country for 150 years back in the 1500-1600s and very nice luxury spas were built in the late 19th century when Budapest became a destination city for a lot of the well off in Europe to visit. Those spas have been fully restored and are gorgeous. They're great for everybody - not just pensioners. We used to go to a Turkish bath that was hundreds and hundreds of years old dating back to the Ottoman occupation.
We used to go to a Turkish bath
Loved my Turkish bath in Istanbul, years later saw it in a Netflix movie about the Ottomans.