This was really an indescribable day!!! It is a 2.5-mile walking tour (self-guided and self-paced) through a house that has the most eclectic and bizarre items. The man who built it had a dream and desire and accomplished it. There are dollhouse collections, gun collections, an ocean-creature room, an organ room, and the largest carousel (which contains no horses, only other animals and creatures).
It is a 1.5-hour drive southwest of the Dells, but for the truly unique experience, it is well worth the drive. It has an infinity room, which is essentially a protrusion from the building that is really incredible.
See my photos, and it does have a site on the Net. It is not something for kids as much as adults, because you will want to take time to see all the items around and above you, so a small child would have a tough time sticking with it.