It was built as the key point of defence of the Pila Gate, and with the Minčeta Tower, is the defence against the western land approach. It is said to be the oldest casemented fortress in Europe.
Originally built as a strong four-sided fort, it is the most prominent point in the defensive system towards the land. It was completed in 1464.
Dominant in the port ambiance, the St. John Fortress prevented access of pirates and other enemy ships. The first fort was built in the 14th century, but was modified up to the 16th century.
A detached fortress providing additional protection to the eastern land approach was built in 1462. In 1538 the Senate approved a new, much stronger Revelin Fortress. It took 11 years to build.
During the republican era, the wooden drawbridge to the Pile Gate was hoisted each night with considerable pomp in a ceremony which delivered the city's keys to the Ragusan rector.
The Outer Gate of Ploče was constructed in 1628, while the two bridges to the Revelin Fortress were built in the 15th century by the same architect as the Pile Gate bridges, hence the similarities.
The Gate of Buža (meaning "hole") is located on the northern side of the land walls. This gate is relatively new compared to the other gates, as it was constructed during the early 1900s.
Constructed in 1476, the Gate of Ponte is situated westwards from the Great Arsenal. The city wall, built at the same period, leads from the Gate to St. John Fortress.
The Fishmarket Gate, built in 1381, stands eastward from the Great Arsenal.
