The cathedral of St. Nicholas / Lala Mustafa Pasha Mosque is the largest medieval building in Famagusta and was commenced in 1300 AD. It must be noted that the great cathedrals of the Middle Ages often took more than 100 years to complete, so was St. Nicholas was completed about 1400.
Famagusta (Greek: Αμμόχωστος, Ammóchōstos; Turkish: Gazimağusa or Mağusa) is a city on the east coast of Cyprus and is capital of the Famagusta District. It is located in a bay between Capes Greco and Eloea, east of Nicosia, and possesses the deepest harbour in the island. Since the 1974 Turkish invasion the city has resided in the de facto Turkish Republic of Northern Cyprus. The old tourist quarter of Varosha is abandoned pending a settlement of the Cyprus dispute. http://en.wikipedia.org/wiki/Famagusta