Domenico Selvo was the 31st Doge of Venice, serving from 1071 to 1084. During his reign as Doge, his domestic policies, the alliances that he forged, and the battles that the Venetian military won and lost laid the foundations for much of the subsequent foreign and domestic policy of the Republic of Venice. He avoided confrontations with the Byzantine Empire, the Holy Roman Empire, and the Roman Catholic Church at a time in European history when conflict threatened to upset the balance of power. At the same time, he forged new agreements with the major nations that would set up a long period of prosperity for the Republic of Venice. Through his military alliance with the Byzantine Empire, Emperor Alexios I Komnenos awarded Venice economic favors with the declaration of a golden bull that would allow for the development of the republic's international trade over the next few centuries.

The Patriarchal Cathedral Basilica of Saint Mark, commonly known as St Mark's Basilica, is the cathedral church of the Patriarchate of Venice; it became the episcopal seat of the Patriarch of Venice in 1807, replacing the earlier cathedral of San Pietro di Castello. It is dedicated to and holds the relics of Saint Mark the Evangelist, the patron saint of the city.