Where did Alan turing invent colossus?

Alan Turing did not invent Colossus; it was developed by a team at Bletchley Park during World War II, primarily by engineer Tommy Flowers. Colossus was the world's first programmable digital computer, designed to break German codes, particularly the Lorenz cipher. Turing was instrumental in codebreaking efforts at Bletchley Park and contributed significantly to the development of computing concepts, but he was not directly involved in the creation of Colossus itself.