Final answer:
Sicily is the largest Mediterranean island known for its popular tourist destinations including the ruins of Syracuse and Taormina.
Step-by-step explanation:
The largest Mediterranean island known for its popular tourist destinations including the ruins of Syracuse and Taormina is Sicily. Sicily is located off the coast of mainland Italy and is known for its rich history, culture, and beautiful landscapes. The ruins of Syracuse and Taormina are important historical sites that attract visitors from around the world.