Rhino and hippo house, Basle Zoo

I was kindly lent several copies of Architectural Design recently - all from the 1960s - and spotted this article from November 1960 which relates to my previous post on the elephant house at London Zoo. 

I've not yet had any real success finding out more about the Basle building, apart from that it was probably refurbished around 2008, but it would obviously be interesting to find out how they handled the task in relation to London Zoo's attitude to their own building.