The park was closed and the site developed as tenement flats in 1857. Nothing now remains of the house or its gardens. Edinburgh Zoo was created by Thomas Haining Gillespie, a solicitor from Dumfries who dreamed of establishing a zoological park in Scotland. At first he was told that tropical animals would never be able to live in a cold climate like Edinburgh's—a view that had to some extent been borne out by the failure of the Royal Zoological Gardens. In 1908, though, he was encouraged to read of the pioneering methods employed by Carl Hagenbeck, which were allowing tropical animals to thrive in the recently opened Tierpark Hagenbeck in Hamburg, Germany. In 1909, Gillespie and others founded a registered charity which was to become the Royal Zoological Society of Scotland. The Society's first president was lawyer and politician Edward Theodore Salvesen, son of the Norwegian merchant Christian Salveson—a connection which would prove significant in later years. A series of lectures given to the society by J. Arthur Thomson gave yet more momentum to the modern approach being spearheaded by Hagenbeck in Germany. All that remained was to find a suitable site for the new zoo. Gillespie hoped for a site with plenty of sun and with shelter from the north and east winds. He also intended the zoo to be cheaply and quickly accessible via public transport. The society secured an option to purchase the Corstorphine Hill House estate for £17,000. The house had been built in 1793 as the home of Scottish accountant William Keith. Its current Scottish Baronial architecture is mostly thanks to remodelling by the Macmillan family in 1891. The zoological society found they were having difficulty gathering the necessary funds before the approaching expiry of the purchase option. Edinburgh City Council stepped in, purchasing the site outright in February 1913. The zoological society was granted full use of the estate in return for a 4 percent annual repayment of the cost. A further £8,000, raised with the help of the society's members, was set aside for the construction and stocking of the park. Initially the zoo occupied only the southernmost , while the land to the north was used as a golf course. The park was designed by town planner Patrick Geddes and his son-in-law Frank Mears. Following Gillespie's vision, they modeled the park after the open designs of zoos like the New York Zoological Park and Hagenbeck's zoo in Hamburg. These modern zoological parks promoted a more spacious and natural environment for the animals, and stood in stark contrast to the steel cages typical of the menageries built during the Victorian era.