[1] It is in the municipality of Sant Josep de sa Talaia and is located close to the islands main Airport and the Salines Salt Pans.

[2] The little church of Saint Francis of the Lagoon[3] stands on the road from Sant Jordi along with a small cluster of buildings which give the resemblance of a monastery.

The design is simple with a very plain interior which has a low timber roof and a chancel which has a pointed arch between it and the nave, an unusual feature for Ibiza.

[3] These towers were built to withstand the danger of artillery bombardment and to guard the islands most important economic asset, namely the salt workings.

Torre de ses Portes was built in the late sixteenth century[3] as an early warning system for the inhabitants of the nearby village of Sant Josep from attack by pirates.

In one corner of this room there is a deep cistern which was designed to supply the occupants with ample water in the event of a prolonged siege.

The original entrance was at the base, and like the Torre de ses Portes has a dog-legged passage[3] for further protection, which was just wide enough for one man to pass through at a time.

The tower was refurbished in 1763 (Inscribed above a window opening) when a more secure entrance was placed in the outer wall at the first floor level.

Similarly, any attempt that attackers made to burn their way through the wooden door could be foiled by tipping buckets of sea water through the slots.

The sea around these islands and in the strait of Es Freus has been designated a UNESCO World Heritage Site[3] on account of the Neptune Grass or Mediterranean tapeweed meadows (Posidonia oceanica) which can be found here.

[4] The clarity and purity of the waters surrounding the islands of Ibiza and Formentera derives largely from this vast meadow of seagrass and the fact that they have been protected and kept in a pristine condition.