How did a scattering of muddy islands become one of the world's great cities? This chapter follows Venice from its refugee origins in the fifth century to the smuggled relics of St. Mark that gave it a patron saint - and overnight prestige.
Last updated August 6, 2026
In a nutshell: when the Western Roman Empire collapsed, refugees from the mainland settled the muddy islands of the lagoon - and a city was born. Salt, fish, the first doges, and the stolen relics of St. Mark made it matter; the rest of the district's story is on the history overview and in the seafaring empire chapter.
In AD 476 the final emperor of the West abdicated as imperial infrastructure collapsed, and Germanic peoples - Visigoths, Huns and Lombards - were overrunning northern Italy. Hoping the invaders would keep their distance from water, Latin-speaking refugees from the mainland settled the lagoon's marshy, uninhabited islands.
They drove piles into the mud to support their dwellings, dug canals to channel the water and threw bridges across the channels, gradually lacing together the hundred-odd natural islands that became Venice. Legend pins the founding to 25 March 421 - the supposed consecration day of the little church of San Giacomo di Rialto - though historians prefer the slow drift of refugees across the fifth and sixth centuries.
The first Venetians lived by harvesting salt and fishing, bartering their catch on the mainland. Around 540 the emperor Justinian won Italy back for Byzantium and re-established the empire from Ravenna, drawing the lagoon islands into the Byzantine orbit. The settlers began electing their own rulers, the doges - constitutional monarchs in the modern sense, picked by their peers from the noble class rather than born to the throne.
By 810 a doge kept his seat at Rivo Alto, the 'High Bank' settlement close to the present-day Rialto Bridge. Protected by Byzantium, the Venetians prospered as seagoing merchants, buying fine goods in the sophisticated markets of the East and reselling them across the West while the remainder of Europe stagnated under feudalism.
Charlemagne, crowned Holy Roman Emperor around 800, cast a hungry eye on the region, but the Venetians deposed the bishop he had appointed and replaced him with a prelate loyal to distant Constantinople. To legitimise the new churchman they smuggled the relics of St. Mark out of Egypt in 828, gaining religious prestige overnight. The great basilica raised to house the relics was built in a deliberately Eastern style, sealing the city's orientation toward Byzantium.