It was specifically constructed as a 'talaia de senyals' (signal tower) meant to communicate with the village of Andratx through smoke or fire signals.
The tower is part of a larger, now largely ruined, coastal defense system that spanned the entire Majorcan coastline to guard against North African corsairs.
It sits at an altitude of approximately 160 meters above sea level, providing a strategic vantage point for the Sant Elm coastline.
The interior of the tower features a vaulted ceiling that remains intact, showing the stone construction techniques of the late 16th century.
The site is within the municipality of Andratx but is accessed primarily through the outlying village of Sant Elm.
Torre de Cala en Basset is a 16th-century stone watchtower situated on a rugged cliff edge on the western coast of Mallorca. Built around 1583, it formed part of a defensive network designed to signal impending pirate attacks to the town of Andratx. The structure is cylindrical, constructed with local limestone, and remains largely unrestored, retaining its original rough architectural character. Visitors reach the tower via a steep, unpaved hiking trail that traverses Mediterranean scrubland. From its elevated position, the tower offers clear views across the sea to the island of Sa Dragonera. There are no modern amenities or interpretive signage on-site, maintaining the location's raw, historical state. It is an unmanaged archaeological site maintained by the local municipal authorities.
The western side of the tower, capturing the stone silhouette with the island of Sa Dragonera as a backdrop.
Wear sturdy hiking boots, as the trail is rocky and uneven with loose gravel.
Bring a high-capacity water bottle, as there are no sources of hydration or shade along the trail.
Download an offline map before you leave, as cellular reception is inconsistent on the coastal trails.
Attempting the trail during peak midday heat in summer or when high wind warnings are issued for the Serra de Tramuntana.
Practice 'Leave No Trace' principles; do not climb on the unrestored stone walls or remove any rock fragments.