Explore This! Welcome to the Cathedral of San Giusto in Trieste, Italy. The Cathedral was built in 1300 by combining two early churches to create a single larger basilica with five naves. On the exterior, Gothic rose windows, local stonework, and Roman era reliefs adorn the gabled facade and the interior’s architecture and design reflects various periods in history. A domed apse decorated with a figurative mosaic scene of Our Lady of the Assumption and Saint Just dates back to the 13th century. This cathedral is rich in history and remains a symbol of the town of Trieste.