The Marriage of the Sea ceremony was a major maritime event in the Republic of Venice commemorated on Ascension Day. It symbolized the maritime dominion of Venice and was manifested by the throwing of a golden ring into the Adriatic Sea. This ritual gesture was performed by the doge of Venice until the fall of the republic in 1797.

San Nicolò al Lido refers to both the San Nicolò Church and most importantly to its annexed Monastery of San Nicolò located in Venice, northern Italy. The two Catholic institutions are located in the northern part of the Lido di Venezia and house the relics of Saint Nicholas, patron of sailors. From this church, the traditional thanksgiving Mass of the Sposalizio del Mare is celebrated. The complex houses monks of the Franciscan order.