As compared to the Citadel in Bonifaccio, that houses an entire old city, there isn't much inside the Calvi Citadel. It is small, but very old and impressive, and was built to defend the city many many years ago. 13th century? 14th?
So for that it is amazing. Great views, old cobbled stone streets, the disputed birthplace home of Christopher Columbus (though Genoa claims to be the correct location). I read the French Foreign Legion still has offices in this small walled city, but there wasn't much going on mid October.
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