Spiaggia di Cala Regina, Beach in Quartu Sant'Elena, Sardinia, Italy

Spiaggia di Cala Regina is a beach on the southeastern coast of Sardinia combining pebbles and golden sand in a natural setting. Rocky cliffs and Mediterranean plants frame the shore, creating a rugged boundary between land and water.

The sources document no watchtower at Cala Regina; the beach lies in the Provincia di Cagliari, Sardegna, about 400 km southwest of Rome. Its recorded history is that of a Mediterranean-climate shore, with an average annual temperature of 18 °C, July averaging 30 °C and February 8 °C, and about 706 mm of rain a year.

The beach takes its name from the nearby Torre di Cala Regina, a 16th-century Spanish watchtower that guarded the Gulf of Cagliari against Barbary corsairs. The tower's ruins still stand on the headland above the cove, and the name "Regina" is said to derive from a Spanish viceroy's wife.

Spiaggia di Cala Regina lies in the Province of Cagliari, in the Sardegna region of southwestern Italy, about 400 km southwest of Rome. The beach faces the Mediterranean, where the climate is mild: July averages around 30 °C, February around 8 °C, and annual rainfall is roughly 706 mm.

Cala Regina lies in the Provincia di Cagliari, about 400 km southwest of Rome, on Sardinia's southwestern-facing coast. The local climate is Mediterranean, with an average of 18 °C and July averages near 30 °C, while February averages around 8 °C. Annual rainfall is about 706 mm, heaviest in November.