There are 365 islets in the lake, and they were formed more than 20,000 years ago during a volcanic eruption. The islets vary quite a bit in size, and many are large enough to have people living on them. Some of Granada's islets are privately owned, with primary or vacation homes on them, while others are more geared to welcome tourists, with a selection of shops, restaurants and hotels. Birders will be especially eager to explore "las isletas," as the variety of bird species on the islets is notable.
The best way to see the islets of Granada is by taking a boat tour. Tours depart from Puerto Asese, which is a short taxi ride from central Granada.