Corsica, as seen from the house. 8 December '08, 07:46, one minute before sunrise. Conditions for viewing Corsica have to conspire. We need (i) very clear weather (mistral in the winter is best) (ii) to get up before sunrise (visibility disappears after sunrise). In fact, it's really a matter of visibility, since Corsica is high enough to been seen easily through clear air (mountains reach 2700 m, and it is only 90 nautical miles away). If you fly into Nice with normal weather conditions, you will perceive it easily to the south as a very large geographical structure.