gah a'tah, a city and very strong fortress in Italy, situated 74 mi. n. w. of Naples on the Gulf of Gaeta. On the promontory on which the city stands is the Torre d'Orlando, the tomb of Munatius Plancus, the friend of Augustus. It stands 160 feet high and has a diameter of 160 feet. Other objects of interest are the campanile of the Cathedral of Saint Erasmus and the remains of a Roman theater. This city carries on a fairly extensive trade in fish, oil, wine and fruit. It was originally a Greek colony. After resisting the barbarian invaders, it became a part of the Byzantine Empire. In 1134 it was annexed to the Norman kingdom of Sicily. Population in 1901, 5528.