THIS is what they ended up doing with their new tropical house? This zoo is never going to become anything unless significant changes happen... Did you have any pictures of the tiger exhibit?
Well, no, as far as I could tell, this has always been a greenhouse with only plants.
The new tropical house actually HAS become a full-fledged tropical house. Not with any specific theme, though (I seem to remember reading on your site zoos.dk that it had a South American theme once).
Not very big, but quite dense and it can actually be hard to spot the free-living animals in there. When I visited, there was an exhibit for dwarf caimans, and the rest of the animals was free-ranging and from the whole world - like crested wood partridges, common marmosets, silvery-cheeked hornbills (I think they were - I'm sadly far from an expert in hornbills) and some passerines. Their new ring-tailed lemurs also live in there as far as I can read on the website.
I do have some pictures of it I could upload. Just not anyone showing the tropical house in its entirety - they were impossible to take due to all the other visitors standing in the way. And I didn't have time to stay until they were leaving. But I have one showing the facade and another showing the one half of the inside.
On the other hand, the old tropical house has become something of a waste. Two small exhibits for banded mongooses and common marmosets as well as an indoor aviary for budgerigars. No reptiles anymore, just a lot of empty space.