Lagina was a town in the territory of Stratonicea, in ancient Caria. It contained a most splendid temple of Hecate, at which every year great festivals were celebrated. Tacitus, when speaking of the worship of Trivia among the Stratoniceans, evidently means Hecate.
Its site is located near Turgut, Asiatic Turkey.
Recent studies have shown that the site had been inhabited and/or employed in an uninterrupted manner during a time span stretching back to the Bronze Age. Seleucid kings conducted a considerable reconstruction effort in the sacred ground of Lagina and transformed it into a foremost religious center of its time, with the nearby (at a distance of 11 kilometers) site of Stratonicea becoming the administrative center. The two sites (Lagina and Stratonkeia) were connected to each other in antiquity by a holy path.
The archaeological research conducted in Lagina is historically significant in that it was the first to have been done by a Turkish scientific team, under the direction of Osman Hamdi Bey and Halit Ethem Bey. In 1993, excavation and restoration work was resumed under the guidance of Muğla Museum, by an international team advised by Professor Ahmet Tırpan.
The friezes of the Hecate sanctuary are displayed in the Istanbul Archaeology Museums. Four different themes are depicted in these friezes. These are, on the eastern frieze, scenes from the life of Zeus; on the western frieze, a battle between gods and giants; on the southern frieze, a gathering of Carian gods; and on the northern frieze, a battle of Amazons.
Lagina was Christianised at an early date and was the seat of a bishop; no longer a residential see, it remains a titular see of the Roman Catholic Church.