Which is the largest island still under Spanish rule?

The largest island still under Spanish rule is Tenerife, which is the largest island of the Canary Islands. It is located in the Atlantic Ocean, off the coast of Morocco. Tenerife has a population of over 890,000 people and an area of 2,034 square kilometers. The island is known for its volcanic landscapes, including Mount Teide, which is the highest mountain in Spain. Tenerife is a popular tourist destination, with visitors coming to see the island's natural beauty, beaches, and historical sites.