Four nineteenth-century buildings have been demolished. Gridley Hall (1882) was the main women's dormitory for many years, and was torn down in 1967 for construction of the Music and Drama Center. Williams Hall (1880) was the college's first science building; it was demolished in 1961. Seccombe House (1880) was used for music instruction until 1914, and was located near the site of the current Skinner Chapel. The first observatory (1878) was replaced by Goodsell Observatory in 1887, and the old building was demolished in 1905 to make way for Laird Hall.