Frightened by the constant intrusions of “Saracens, Phoenicians, Greeks, Carthaginians, Romans, Vandals...”, the Mallorcan authorities designed a spectacular surveillance system along the coast, the watchtowers. These sighting fortifications, situated at the highest points on the coast and visible to each other, warned of any danger and spread the alert in a few minutes throughout the coast with a signal of fire and smoke. Still today, once a year, this is commemorated by lighting all of them, but with another meaning: a #EncesaPelsDretsHumans.

At the end of the 16th century, the first of the island's defence towers was built on mount of na Pòpia, the summit of the island. This tower was visible from the Verger tower and the tower of cap Andrixol. In the mid-19th century, it was destroyed in order to place the first lighthouse on the Mallorcan coast, which was given the same name.

As the watchtower of na Pòpia was not enough to cover the most hidden coves in the region, two more towers were built in Cala Embasset (next to Sant Elm) and the Llebeig tower. The three formed the surveillance system for this strategic point on the Mallorcan coast and the Western Mediterranean. This ethnological landscape, emerged from a maritime façade full of history, evokes the experiences of the watchmen who resided permanently and were responsible for making the appropriate warning signals.