This museum used to be the famous Rotorua Bath House, using the latest in thermal health treatments, opened 1908. But the corrosive waters consistently destroyed the piping and concrete of the building so it was closed. Now, its an extremely interesting museum, you even get to go to the basement to see the old piping and baths, and to the roof walkway for views of the Lake and town site. There was an art gallery, we saw a Rembrandt reproduction exhibition as well. The other wing is dedicated to Maori history, including a lot of information on the Mt Tarawera eruption, a fascinating story with mystic elements but so much tragedy. Well worth the $20 entry.