Yesterday, we all went to Randers Regnskov.
I mainly picked it because it’s fairly easy to get to using public transport (take the bus from Sdr. Vissing to Skanderborg, and then the train straight to Randers), but I actually think the kids liked it.
In Randers Regnskov, most of the animals roam freely in the same area as the visitors, not just butterflies and snails, but also snakes, monkeys and vultures.
The kids were allowed to help feed the manatees and the monkeys (the latter with live crickets), which they greatly enjoyed.
(BTW, if anybody else is going there by public transport, don’t forget you can get a combination ticket.)