Tourism is a very large part of the economy of Corfu. It is one of the most touristic islands in the Mediterranean Sea. Every year, many tourists visit the island. Corfu has many forests and olive trees. It also has many beaches. There are many other places of interest on the island. The city of Corfu has an appearance from an older time. It has many Venetian, Napoleonic, and Georgian buildings. The town is an UNESCO monument. A very important place is Achilleion. It was the palace of Empress Sissi. The rest of island has many villages, beaches and famous castles.