On computable numbers, with an application to the Entscheidungsproblem (31 jul 12)
Bletchley Park

Turing's paper which led to the invention of computers

The huts where Turing worked

A working 'Bombe' - the machine which cracked the Enigma code

A miniature version of the 'Bombe'

Colossus, the first computer, rebuilt

Colossus, the first computer, rebuilt

Colossus, the first computer, rebuilt

Colossus, the first computer, rebuilt

Colossus, the first computer, rebuilt

Five-bit paper tape in the Colossus

Colossus's optical tape reader