BISCEGLIE (perhaps anc. Natiolum), a seaport and episcopal see of Apulia, Italy, on the E.S.E. coast, in the province of Bari, from which it is distant 2112 m. by rail. Pop. (1901) 30,885. Two towers, one some 90 ft. high, of a once strong Norman castle still remain; the cathedral belongs to the same period. The church of S. Margherita, founded in 1197, has fine canopied Gothic tombs of the Falcone family.