San Giusto Cathedral, which is situated on the top of the Capitoline Hill, is unndoubtely the most beautiful church in whole town.

The church was completed at the end of the fourteenth century, when the two primitive churches of San Giusto and Assunta were joined together. At the centre of the front facade there is the big Gothic rosewindow in white stone composed by two halo of rays with 36 little columns.

On the left side of the Cathedral is the bell tower which looks like a defense tower. It was built between 1337 and 1343 on a pre-existing Romanesque bell tower.
Originally there was a round stone ornament on the spire, called "melon", which is now the symbol of Trieste.

Above the entrance to the bell tower you can see a niche with a lancet arc with the statue of San Giusto, the protector Trieste. On the left side of the Cathedral is a basrelief showing the papal insignia and the coat of arms of Enea Silvio Piccolomini, Bishop of Trieste and then Pope with the name of Pius II.
You can also see three bronze busts representing Pope Pius II and the Bishops Andrea Rapicio and Rinaldo Scarlicchio, who found the relics of the martyr Giusto. Do not miss to see the beautiful interiors of the church.

The current fortifications that sit above the city of Trieste are actually the second structure (possibly the third) to be erected in that spot. The castle was constructed between 1470 and 1630, although there were earlier Venetian battlements here and perhaps even earlier fortifications.
Today, there are plays in the courtyard of the Castle during the summer, and part of the city's Civic Museum is located here.

The Sala Veneta, inside the Castle, is a reconstruction of a 17th century room complete with Flemish tapestries. Apart from this, and the Museo Civico, visitors can also enjoy views from the battlements and (self-guided) tours of the kitchen and loggia.