How does the modern gorilla enclosure compare with the past?

How does the modern gorilla enclosure compare with the past?

The enclosure that the gorillas used to have at ZSL London Zoo was a very functional exhibit, very good for the animals. In fact, the animals were really quite happy there. But the move forward for ZSL London is to provide, wherever possible, a cageless environment for the animals and that's what we've got here at the gorilla kingdom that opened in march 2007. So it's still a very freshly, very new exhibit that cost more than 5 million pounds to build. It's a large island surrounded by water, but with no cages. So it's a fully open environment for the animals. And that's the thing that we're trying to do for as many species as possible in the zoo.