Two years ago we went on a cruise on the Waikato river. There is a live commentary on the way.
Trip takes an hour.
The building is part of the Hamilton Gardens. The Hamilton Gardens are one of the most beautiful public gardens I’ve seen. There are many different types of Gardens. Yes, they are carefully manicured but they are for a purpose of keeping to individual themes of various cultures.
The cruises costs a little money. Entrance to the gardens is free.