The construction of this fort began after 1278, when Hvar came under Venetian rule. The medieval castle, together with the town walls, represented a unique defense system for the town of Hvar. By 1551, a new Renaissance fort, similar to the one today, was built on the site of the old Gothic castle. The fort was severely damaged in 1579 due to an explosion in a gunpowder warehouse. Repairs were only completed at the beginning of the 17th century, when new buildings and bastions were built. The last buildings were erected during the 18th and 19th centuries during Austrian rule, when Fortica got its present appearance.