This polygon covers the area of Jessop's hospital and is at the limits of the city's 19th century expansion. It was designed in a late Gothic style by J. D. Webster and opened in 1878. The funds for the hospital were provided Thomas Jessop, a local steel magnate. It originally had a capacity of 35 beds but was extended in 1902, by Webster, and again in 1940. The hospital closed towards the end of the 20th century and was bought by the University of Sheffield in 2002. The University intends to house academic departments in the building. Until the construction and expansion of the hospital complex in the late 19th century this area was occupied by large late Georgian terraces and detached villas shown on the 1851 OS. No legibility of earlier urban environments.