The synagogue was unveiled in 1912 in the presence of municipal officials, and it replaced the four smaller ones (Scholae) that previously existed, from mid 18th century, and which were based on an architectural model quite common in northeastern Italy, with rectangular rooms with rows of pews orientated towards the centre or the eastern side; inside, they were delicately decorated and furnished but showed a humble and anonymous aspect from the outside.[citation needed] Different architectural styles have successfully blended into this building, whose essence is represented by four powerful marble pillars supporting an imposing central dome."[2]The size and structure of the building clearly define it as a synagogue of the emancipation period, in which the main prayer room, with a rectangular floor plan, divides itself into three naves ending with the majestic apse and its vault with golden mosaic.The whole room is orientated towards a monumental aròn with copper doors, surmounted by a pink granite aedicule which sustains the tables of the law with four columns.At its sides, two big menoròt, bronze candelabra with seven branches, leaning on a marble balustrade with wheatsheaf, symbols of the Community of Trieste.