Sydenham Hill of large residential properties built along Sydenham Hill, including Grange Court (1861), The Wood (1840), Dilkhoosh (now Fountain House) (1864), Highfield (1855), The Cedars (1894), Sydenham Hill House (1898), Dulwich Wood House (1858), Beltwood House (1851) and Castlebar (1879). In 1854, the areas importance was increased after the Crystal Palace was relocated from Hyde Park and re-erected on the southwestern end of the ridge. In 1863, the Chatham Main Line was opened by the London, Chatham and Dover Railway, bringing the railway to Sydenham Hill. Construction involved building a 1.2 mile (1,958 meter) tunnel through the hill, starting at College
Sir John Aird, 1st Baronet Aird & Co., in 1848. On his 18th birthday in 1851, Aird junior joined the family firm – which subsequently traded as "John Aird & Sons" for a while. The business had initially focused on gas and water network installations, but soon expanded into more general building work. John Aird's first significant scheme was the dismantling, transportation and re-erection of The Crystal Palace buildings from the 1851 Great Exhibition from central London's Hyde Park to Sydenham in south London. Other company projects included the construction of reservoirs and of railways and docks work. Aird became an associate of the Institution