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Open House London is an annual festival celebrating the architecture and urban landscape of London. It is staged by the charity Open City which campaigns to make London a more accessible, equitable and open city. During the Open House festival, many buildings considered to be of architectural significance open their doors for free public tours. In a typical year, Open House Weekend attracts around 250,000 people. Outside of the Open House festival, Open City organises other projects including year-round tours, lectures and educational events for children and young people.