Theresa St. J.
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It was built in the 1st half of the 13th century, intended to be used as a defensive bulwark - mainly from sea attacks. Today it is filled with bits and pieces of amazing history, art masterpieces, an area you can see restorative work on paintings. It is divided into four parts: archaeological, medieval, Renaissance, and modern, with the Benedictine and Biscari Museum collections front and center. I believe this is a must see when you visit Catania. There is a partial view of Mount Etna from the top of the castle walls. On the day we were there, they were getting ready for a concert that evening, so it looks like they host special events as well. Could have spent more time here - was wonderful.