Torre de la Penya, 16th century defensive tower in Alghero, Italy.

Torre de la Penya, known in Italian as torre della Pegna, is an Aragonese-era watchtower standing on a cliff over 200 metres high near Capo Caccia, in the Porto Conte–Prigionette state forest. It is reached by a path that breaks off and continues along the cliff edge between rock and vegetation. Opposite it to the north-west lies the island of Piana.

The tower is of Aragonese origin, like the nearby towers of Tramariglio, Buru and Porto Conte. It stands within the Porto Conte - Prigionette state forest, on a cliff over 200 metres high near Capo Caccia. Its Catalan name, La Torre de la Penya, is still the official one.

The tower's name is Catalan, the official form La Torre de la Penya, still used in Alghero where Catalan is spoken alongside Italian. It stands in the Porto Conte–Prigionette state forest, and the path to it runs between rock and vegetation along the cliff edge.

Reaching the tower requires a walk of several hours from Capo Caccia along a coastal path with rocky terrain. Sturdy footwear, plenty of water, and sun protection are essential for a comfortable visit.

The tower stands inside the Porto Conte–Prigionette state forest, and the approach path breaks off and continues along the cliff edge between rock and vegetation. An alternative route leaves from the Capo Caccia belvedere or Cala Dragunara, passes Cala Inferno and then follows the cliff northward. Almost directly opposite, to the northwest, lies the island of Piana, separated from the rest of the coast.