The first, the Gate of Humility, was originally entered from the street, and is now relocated in the Master's Garden. The second, the Gate of Virtue, can be seen between Gonville and Caius Courts. The final gate, the Gate of Honour, marks progress from the college to the Senate House and from thence into the outside world.
All three gates were designed by the master and co-founder of the college, the celebrated royal physician Dr Caius. (His original name was Keys, which he changed to the more scholarly and classical Caius!) He studied medicine in Padua in the 1560s and returned to England with Renaissance ideals and Italianate taste. The Gate of Honour is classical in detail, an unusual composition of an arched gateway surmounted by four columns and a pediment, topped by a stone hexagon carrying a sundial on each face."
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