The National Museum Of Computing has re-built one of the original Colossus computers, using as many original parts and valves as possible.
Programme on paper tape.
Paper tape feeder running fast enough to give you a nasty paper cut.
Racks of Valves
Data entry console. Output is from a teletype off to the left.
Entry to Bletchley Mansion
WW2 era Talbot
Crumbly brick wall
Heron in the Bletchley Park pond.