The Ploče Gate is located in the north-eastern corner of the Dubrovnik city walls, next to the Tower of St. Łukasz, from whom she is also called the Gate of St. Luke. The building consists of an external gate, built according to the design of Simon della Cava in 1450, and an older internal gate, erected in the Romanesque style, on which the tympanum has been preserved a Romanesque bust of St. Blaise.
A year before the external gate was erected, a single-span stone bridge was built, modeled on the bridge leading to the Pile Gate, which from the beginning was partially drawbridge. The raised wooden section of the bridge just before the gate could be easily destroyed in the event of an enemy attack. Originally, very deep moats ran along the wall, which are currently being buried.
According to the principles of the Romanesque style, the inner part of the Ploče Gate is a massive structure with a very narrow passage, only 2 m wide. It currently has two passages - the second was pierced by the Austrians at the end of the 19th century, when the gate lost its defensive function. The section between the outer and inner gate runs along the wall of Fort Ravelin.