Derived from the expansion of an oratory that had existed since 1699, the synagogue of the Ashkenazi, i.e., German, rite was inaugurated in 1756.
Its present appearance, with its double entrance portal, rose window and tables of the law in Hebrew characters, is the result of the restoration carried out by architect Emilio Luzzatto in 1894, following the demolition of the houses that separated the synagogue from the street axis. In the 1950s, the redevelopment of the neighborhood gave a new appearance to the building, which found itself isolated from the adjacent buildings, with which it had previously formed a single front on Via Ascoli. In the entrance courtyard a plaque commemorates the Gorizian Jews deported by the Nazis in 1943. Next to it is a stylized menorah, i.e., the candelabra symbolic of Judaism, the work of Simon Benetton.
The synagogue hall, which is accessed by climbing the staircase located in the atrium on the first floor, has retained its 18th-century structure, with its wooden balcony gallery and tabernacle (Aron hakodesh) supported by four twisted columns of black marble, inside of which is the scroll of the Holy Scriptures (Torah).
In 1959 the synagogue was closed to worship because of the small number of Jewish families in the city, and in 1969 it became a simple section of the one in Trieste. Donated to the municipality after restoration in 1984, it is now run by the “Friends of Israel” association.