Before or after your visit to the Basilica of Sant'Ambrogio make your way to Saint Ambrose Square where you will discover a strange Corinthian white column standing on its own, which is now known as the ‘Devil’s Column’.
If you look closely, you will see two precisely carved holes in the white marble pillar, which according to legend appeared there after the Devil himself punctured the column with his horns in pure frustration after many failed attempts to cause Saint Ambrose to sin.