Tecton Group the leaders in bringing continental modernism to Britain. The group's first commission was the 1932-1934 gorilla house in the London Zoo in Regent's Park. After the successful completion of the gorilla house, the group designed a penguin pool for the zoo, which contained a unique double helix-shaped walkway without intermediate supports for the penguins and a large swimming area. The group's successes at the London Zoo resulted in their designing two other zoos: Whipsnade Zoo in Bedfordshire and Dudley Zoo in West Midlands. The group then designed the Highpoint I tower, an apartment complex in Highgate. The complex set a
Milwaukee County Zoo mall, and grizzly bear den. The zoo also opened with a gauge miniature railway, the "Zoo Line", which carried visitors around the zoo to view the exhibits and construction. The Zoo Line (now known as the "Safari Train") has continued to run, operating with real steam locomotives. In 1959, construction started on the dall sheep mountain and the Alaskan bear exhibit. On May 13, 1961, the Milwaukee County Zoo officially opened to the public. Later additions included the aviary (1962), the Australian building (1963), the original animal hospital (1963), the small mammal building (1965), the aquarium (1968), and the reptile