The synagogue was built in a modest and simple style by Claudio Cogorano and Alessandro Pieroni.

In the following years the synagogue was enlarged to accommodate an increase of Livorno's Jewish population to approximately 3,000 people.

[1][2] The project to build a larger worship hall and to add galleries was undertaken by Francesco Cantagallina in 1642.

[2] The Torah ark was built with inlaid colored marble by Isidoro Baratta from Carrara, surmounted by a silver crown with a topaz set on it.

[4] On September 20, 1789, the first evening of Rosh Hashanah 5550 according to the Hebrew calendar, the newly renovated synagogue was inaugurated.