The Canal Grande (English: "Grand Canal") is a navigable canal located in the heart of the Borgo Teresiano, in the very center of the city of Trieste, approximately halfway between the railway station and Piazza Unità d'Italia. The Canal Grande was a key element of the new urban plan that led to the construction of Borgo Teresiano.
It was built between 1754 and 1756 by the Venetian Matteo Pirona, further digging the main collector of the salt pans, when these were buried to allow the urban development of the city outside its walls. It was built so that boats could come directly to the city center to unload their goods.
In its initial conformation, the canal was longer than it is today, reaching as far as the church of Sant'Antonio. The terminal part of the canal was buried in 1934, with rubble resulting from the demolition of the old city, thus obtaining the current Piazza Sant'Antonio. In the burial it is said that a small torpedo boat, moored there in failure and abandoned since the end of the war, was also buried, although from the photographs of the time, depicting the burial works, no hull can be seen.
The canal area is overlooked by:
The canal is now crossed by two bridges and a pedestrian walkway.
The name of the bridges derives from the color in which their structures were originally painted. At the time of their construction the bridges were revolving or opening, to let sailing ships access the canal. The movable bridges were later replaced by the current fixed masonry bridges, which, however, only allow the passage of small boats during low tide. The Ponte Rosso was replaced in 1925, and the Ponte Verde in 1950. The Green Bridge and the White Bridge thus became a single structure.
A 25 m long pedestrian walkway, laid over the canal on 4 December 2012 and inaugurated on 23 March 2013, connects Via Cassa di Risparmio with Via Trento. It is made in steel, 120 cm high unbreakable glass parapets and a handrail on both sides, under which there are LED bodies that illuminate the walkway, covered in Istrian stone and steel. The bridge is officially named Passaggio Joyce ("Passage Joyce"), and is also known as "Ponte Curto", due to and alleged error of measurement in the project.
Next to the Ponterosso is the square of the same name, home to an outdoor market. Over time, the lively market has shrunk considerably. On one side of the square there is a fountain (1753 – Giovanni Battista Mazzoleni), with in the center the statue of a puttino, familiarly called Giovannin de Ponterosso, due to the fact that the water that fed it came from the San Giovanni district.
At the end of the canal there is the aforementioned Piazza Sant'Antonio, set up as a garden, with a large fountain in its center. The Stella Polare café, one of the historic cafes of Trieste, overlooks the square.