Torre del Prezzemolo, 16th century coastal tower near Spiaggia di Calamosca, Cagliari, Italy

Torre del Prezzemolo is a small truncated-cone coastal tower built of limestone on a narrow rocky spur of the Sant'Elia hill, 34 metres above sea level. It stands about 11 metres high with a base diameter of 4 metres. Its only entrance is 4 metres above the ground, and the interior chamber has a dome vault; the gun platform was reached by a trapdoor and ladder.

The tower has 16th-century origins and was originally called torre di Capo Bernat or del Lazzaretto. In 1638 it was decommissioned after the nearby Torre di Calamosca was built, then rearmed in the 18th century and in 1793 helped repel the French landing. It was later decommissioned for good, restored in 1916, and in 1967 buttresses were built to shore up the rock beneath it.

The name "del Prezzemolo" once belonged to a different coastal tower, the nearby Torre di Cala Fighera, which no longer stands; this tower was originally called Torre di Capo Bernat, Cala Bernat or del Lazzaretto. In Sardinian Campidanese it is turri de su Perdusemini. The name Lazzaretto comes from the 18th-century quarantine building nearby.

The tower is reached on foot along a dirt track from the Sant'Elia district; no paved road leads to it. The path crosses uneven ground on the rocky spur of the Sant'Elia hill, so sturdy shoes are needed. The entrance opening sits about four metres above the base, and there is no internal masonry stair.

The name "del Prezzemolo" (parsley) belonged to another tower, the nearby Torre di Cala Fighera, which no longer exists; this one was originally called torre di Capo Bernat or del Lazzaretto. Its entrance sits four metres above the ground, and the gun platform was reached by a wooden ladder through a trapdoor, as no masonry stair was built inside.