I've always been particularly interested in walk-through exhibits, but usually these exhibits are fairly limited to lemurs, squirrel monkeys, and butterflies (at least in the zoos in Britain). What I'm wondering is what unusual and innovative walk-throughs are there? I think this could be quite an interesting discussion. The walk-through spider exhibit at London Zoo is quite good, though small, though I suppose there was no need to make it any bigger. I must admit I did think that the rest of the spider exhibit (which isn't walk-through) would be bigger with more spider species variety, but meh, it was still good. I am sure that I remember some kind of walk-through frog exhibit that I saw on the Internet. I can't seem to find it again, does anyone know any info? To finish off, I think that a walk-through insect enclosure would be interesting. As well as the usual stock of tropical butterfly species, there could also be sun beetles, jewel beetles, and other fruit beetle species, and giant millipedes. The main problems would be keeping the planting alive, because as I have found from personal experience keeping sun beetles, their faeces tends to kill the plants off. Does anyone know of interesting walk-throughs?