Columbretes Islands stand as one of the most desirable places throughout the Mediterranean coast. They are small volcanic islands formed by a series of islands and rocks assembled in four groups to which they are given the name of Isla Grossa, La Ferrera, La Forada and The Carallot. It is one of the sets of most valuable ecological islands of the Mediterranean Sea, is located about 30 miles east of Castellón.

The boat trip to the islands takes about 2 hours to Puerto Tofiño. That part is usually seen Grossa L'illa is the only part of the archipelago can be explored on foot and has a pleasant walk to the lighthouse, along the road you can admire the impressive row of craters that give birth to the Island and a rich flora and fauna native species unique in the world.