The Toledo Zoo developed across the twentieth century through a series of distinctive buildings and exhibits with Moorish, Spanish, and Spanish colonial revival influences. Its Aviary, completed on May 31, 1937 and designed by Paul S. Robinette and Michael O'Shea, housed bird exhibits, a bird infirmary, and offices, was renovated in 1998, and was the first building to utilize natural glass block. A 1936 subway station by the same architects served as an underground pedestrian crossing of Canal Boulevard and later remained only as a storage area after its northern building was demolished for a new pedestrian bridge. The Aquarium and Trout Stream, completed on May 31, 1939, also by Robinette and O'Shea, originally held aquatic exhibits and a meeting room, later continued in aquatic and office use, and was at the time the largest freshwater aquarium in the world. The Elephant House, completed in 1923 by Stophlet and Staplet in Spanish colonial revival style, originally held elephant, rhino, and hippo exhibits, became known as a cathedral for elephants because of its clerestory, later included Antler Hall and the zoo's first reptile display, and after renovation in 1998 was renamed African Lodge and used as a conference center and catering facility. The Reptile House, dedicated on September 15, 1934 and designed by Paul S. Robinette and Roger Conant, was the first zoo building built under the C.W.A., with reptile exhibits that later expanded to breeding, research, holding areas, and offices. The Carnivora Building and Cafe, completed on December 25, 1927 by Stophlet and Stophlet, originally housed lions, tigers, and other cats along with a bakery and first veterinary hospital, and after renovation in 1993 became a cafeteria where the public can sit in old animal cages. Wonder Valley, completed in May 1953 and funded in major part by longtime supporter and first zoo Life Member Elizabeth Mau, brought visitors face to face with domestic animals. The Amphitheater, Indoor Theater, and Museum, completed between 1935 and 1936 by Robinette and O'Shea, served exhibits, performances, a restaurant, offices, and a library, and later housed administrative offices, a library, insect exhibits, educational and volunteer functions, revolving exhibits, and performances. Monkey Mountain, completed in 1933 from a design by zookeeper Roy Collins inspired by the Hagenbeck Zoo in Germany, provided a natural environment for monkey exhibits and was the first of the relief built projects at the zoo. The Herbivore and Giraffe House, completed in 1928 by Stophlet and Stophles for giraffe exhibits, was demolished in 1984 to make room for the African Savanna exhibit, though its copper and glass skylight was saved and turned into a free standing shelter.