Temple Works is a former flax mill in Holbeck, Leeds, West Yorkshire, England. It was designed by Joseph Bonomi the Younger and built by John Marshall between 1836 and 1840. Temple Works is the only Grade I listed building in Holbeck. Temple Works, also known as Temple Mill, was based on the Temple of Horus at Edfu in Egypt with a chimney designed in the style of an obelisk. Marshall's inspiration for the design of Temple Works was his interest in Egyptology. When it was built it was said that Temple Works was the biggest single room in the world. An unusual feature of the Temple Works building is that sheep used to graze on the grass-covered roof. This served the purpose of retaining humidity in the flax mill to prevent the linen thread from becoming dried out and unmanageable. A planning application dated July 2005 proposed to partly demolish, refurbish, and extend the mill to form a retail centre, offices, cafes, 75 flats and parking. On 8 December 2008 a stone pillar in the mill's facade collapsed. A slab of millstone grit fell onto the pavement in Marshall Street and the roof parapet above the pillar bowed out. English Heritage advised on a strategy for repairs; their spokesman said that the building was "probably the finest example of a carved stone elevation in the whole region." In late 2009 the building was as an arts centre, with an initial exhibition and tour as part of Leeds Light Night on 9 October.