Tate Modern, situated in London, is home to the United Kingdom's comprehensive assortment of international modern and contemporary art created after 1900. It is an integral part of the Tate group, which also includes Tate Britain, Tate Liverpool, and Tate St Ives. Housed within the transformed Bankside Power Station, located in the Bankside area of Southwark, London, Tate Modern ranks among the world's most extensive museums dedicated to modern and contemporary art. Similar to the UK's other national galleries and museums, access to the collection displays at Tate Modern is offered without any admission fee, encompassing a significant portion of the gallery space. However, tickets are required for entry to major temporary exhibitions.

After sharing the Millbank site with Tate Britain for an extended period, Tate Modern has been situated in the repurposed former Bankside Power Station since the year 2000. The power station's original design was the work of Sir Giles Gilbert Scott, the architect behind the Battersea Power Station, and it was constructed in two phases between 1947 and 1963. Positioned directly across the river from St. Paul's Cathedral, the power station ceased operations in 1981.

Before undergoing redevelopment, this power station was characterized by a 200-meter-long steel-framed structure, covered in brick cladding, featuring a prominent central chimney that stood at a height of 99 meters. The building was essentially divided into three primary sections, all running from east to west. These included the expansive central Turbine Hall, the boiler house to the north, and the switch house to the south.

After its closure, the Bankside Power Station faced the threat of demolition at the hands of developers for many years. Numerous individuals passionately advocated for the preservation of the building and proposed potential alternative uses for it. An attempt to have the building listed was denied. In April of 1994, the Tate Gallery disclosed its plans to repurpose Bankside as the future location for the Tate Modern. In July of the same year, they initiated an international competition to select an architect for the new gallery. Jacques Herzog and Pierre de Meuron from Herzog & de Meuron were declared the winning architects in January 1995. The conversion of the site into the Tate Modern, with a budget of £134 million, commenced in June 1995 and was successfully completed by January 2000.