background and climax to the composition"; and the south, given to athletic pursuits. With the support of University President Benjamin Ide Wheeler, Howard designed more than twenty buildings, which set the tone for the campus up until its expansion in the 1950s and 1960s. These included the Hearst Greek Theatre (1903), California Hall (1905), the Hearst Memorial Mining Building (1907), Sather Gate (1908), Durant Hall (1911), Wellman Hall (1912), the Sather Tower (1914; nicknamed "the Campanile" after its architectural inspiration, St Mark's Campanile in Venice), Doe Memorial Library (1917), Gilman Hall (1917), Hilgard Hall (1917), Wheeler Hall (1917), California Memorial Stadium (1923), (Old) LeConte Hall (1923), Haviland Hall (1924), and Hesse Hall (1924). Buildings he regarded as temporary, nonacademic, or not particularly "serious" were designed in shingle or Collegiate Gothic styles, including North Gate Hall (1906), Dwinelle Annex (1920), and Stephens Hall (1923). Multiple buildings and structures in the classical core are listed as a single aggregated California Historical Landmark (no. 946) and also are listed individually in the National Register of Historic Places: Founders' Rock University House Faculty Club and Glade Hearst Greek Theatre Hearst Memorial Mining Building Doe Memorial Library Sather Tower and Esplanade Hall Sather Gate and Bridge Hearst Gymnasium California Hall Durant Hall Wellman Hall Hilgard Hall Giannini Hall Wheeler Hall North Gate Hall South Hall John Galen Howard retired in 1924, his support base gone with both Phoebe Hearst's death and President Wheeler's resignation in 1919. William Randolph Hearst, seeking to memorialize his mother, contributed to Howard's resignation by commissioning Bernard Maybeck and Julia Morgan to design a series of dramatic buildings on the southern part of the campus. These were originally to include a huge domed auditorium, a museum, an art school, and a women's gymnasium, all arranged on an eastward esplanade and classically oriented towards the campanile. However, only the Hearst Women's Gymnasium was completed before the Great Depression, at which point Hearst decided to focus on his estate at San Simeon instead. Steam tunnels Underneath UC Berkeley's oldest buildings is a system of steam tunnels which carry steam for heat and power. During the 1960s, Berkeley students chained the doorknobs of the Chancellor's office in protest over the Vietnam War. The Chancellor, having no other way in or out of the building, used the steam tunnels to escape. Afterwards, the exterior double doors on that building were changed so they only had