The Baitul Futuh Mosque (English: House of Victories) is a mosque in London. It is the largest mosque complex in Western Europe. Completed in 2003 at a cost of approximately £5.5 million, entirely from donations of the Ahmadiyya Muslim Community, the mosque covers an area of 5.2 acres (21,000 m²) and the full complex can accommodate up to 10,000 worshippers.