Of Como's old churches, San Fedele is the one that architects travel for. Its plan joins three naves to two opposed chapels with an ambulatory, and the closest comparisons are in the Rhineland, at the Palatine Chapel in Aachen and a church in Cologne. The building replaced an earlier church of Saint Euphemia, and it took its present name in 964, when Bishop Gualdone brought the relics of the martyr Fedele (Fidelis) to Como.
The square outside is part of the visit. Piazza San Fedele was already a meeting place in Roman times, near the crossing of the main streets, and later served as the town's food market. Today Renaissance houses with timber overhangs face the church, and a medieval portal carved with dragons waits on the north side. Allow about half an hour inside, then continue to the Cathedral or Porta Torre on foot.