This great communal revolution, itself a result of the wave of feeling produced by the Crusades, left its characteristic mark in the armorial bearings of the town, the Crusaders' Palm upon its shield. While its neighbours, Ventimiglia and Albenga, sank into haunts of a feudal noblesse, San Remo became a town of busy merchants, linked by treaties of commerce with the trading cities of the French and Italian coasts. The erection of San Siro marked the wealth and devotion of its citizens. Ruined as it is, like all the churches of the Riviera, by the ochre and stucco of a tasteless restoration, San Siro still retains much of the characteristic twelfth-century work of its first foundation. The alliance of the city with Genoa was that of a perfectly free State. The terms of the treaty which was concluded between the two Republics in 1361 in the Genoese basilica of San Lorenzo are curious as illustrating the federal relations of Italian States. It was in effect little more than a judicial and military convention. Internal legislation, taxation, rights of independent warfare, peace, and alliance were left wholly in the power of the free commune. San Remo was bound to contribute ships and men for service in Genoese warfare, but in return its citizens shared the valuable privileges of those of Genoa in all parts of the world. Genoa, as purchaser of the feudal rights of its lords, nominated the podesta and other judicial officers, but these officers were bound to administer the laws passed or adopted by the commune. The red cross of Genoa was placed above the palm tree of San Remo on the shield of the Republic; and on these terms the federal relations of the two States continued without quarrel or change for nearly four hundred years.