Lucca (20), cap. of the Italian prov. of Lucca (309), on the Serchio, 12 m. NE. of Pisa; has an extensive trade in olive-oil, silk, and capers, the specialty of the province. Its cathedral has a very ancient cedar crucifix, fine paintings, and valuable archives. There are other ancient churches, scientific and artistic institutes, and a wonderful aqueduct of 459 arches. The natives are known over Europe as stucco figure-sellers and organ-grinders.