St Mark's Basilica

Timeline

1. 828

   Translatio of Saint Mark

   Two Venetian merchants smuggle the relics of Mark the Evangelist out of Alexandria — supposedly hidden in a barrel of pork — and bring them to Venice, where Mark becomes patron saint.

2. c. 836

   First Church (Participazio)

   The first cruciform sanctuary, the Participazio church, is completed under the doges' direction and Saint Mark's relics are installed in their permanent shrine.

3. 976

   Riot and Fire

   A popular uprising against Doge Pietro Candiano IV burns down the Participazio church; Doge Pietro Orseolo I rebuilds it two years later as the Orseolo church.

4. 1063

   Present Basilica Begun

   Doge Domenico Contarini commences the present five-dome cruciform basilica, modelled on the now-vanished Church of the Holy Apostles in Constantinople.

5. 1090s

   Core Structure Complete

   Under Doge Vitale Falier the main Greek-cross-and-five-dome structure is essentially finished, opening nine centuries of subsequent enrichment.

6. 1204

   Fourth Crusade Spoils

   Venetian galleys returning from the sack of Constantinople bring back porphyry, marble columns, relics, and the four bronze horses to clad the basilica.

7. 1345

   Pala d'Oro Completed

   After multiple campaigns of Byzantine goldsmithing from 976 onward, the Pala d'Oro reaches its final form behind the high altar.

8. 1451

   Patriarchate Moves to Venice

   The patriarchate of Grado is transferred to the Venetian islands, but the cathedral remains San Pietro di Castello rather than San Marco.

9. 1797

   Fall of the Republic

   Napoleonic armies extinguish the thousand-year-old Republic of Venice, ending the basilica's role as the chapel of the Doge.

10. 1807

    Becomes Cathedral

    By imperial decree the patriarchal seat moves from San Pietro di Castello to San Marco, and the basilica finally becomes the cathedral of Venice.

11. 1902

    Campanile Collapse

    The adjacent free-standing campanile suddenly collapses; miraculously the basilica itself sustains only minimal damage and is rebuilt by 1912.

12. 1987

    UNESCO World Heritage

    Inscribed as part of 'Venice and its Lagoon', a rare entry in which the entire city rather than a single monument is listed.

Detailed History

St Mark's Basilica traces its origin to 828, when two Venetian merchants smuggled the body of Mark the Evangelist out of Alexandria — supposedly hidden in a cask of pork — in what chronicles call the translatio of Saint Mark. Venice was then a self-governing territory under the distant suzerainty of Byzantium. Doge Giustiniano Participazio (827-829) willed that his brother Giovanni build a church for the relics, and by about 836 the first cruciform sanctuary — the Participazio church — was complete and the relics installed. It was destroyed during the riot of 976 that overthrew Doge Pietro Candiano IV, and Doge Pietro Orseolo I rebuilt it as the Orseolo church in 978. In 1063 Doge Domenico Contarini commenced the present structure, modelled on the now-vanished Church of the Holy Apostles in Constantinople (demolished 1461). The main body was structurally complete by the 1090s under Doge Vitale Falier, though the original fabric was a relatively plain brick basilica. The transformation into a glittering Byzantine treasure-house came after 1204, when Venetian galleys participating in the Fourth Crusade sacked Constantinople and shipped home porphyry columns, marble revetments, gold reliquaries, sculpted reliefs, and most famously the four bronze horses of the Hippodrome. From the thirteenth century these spoils were embedded into the brick facade. The gold-ground mosaics began in the eleventh century and were added, retouched, and renewed through the nineteenth, incorporating drawings by Paolo Veronese, Tintoretto, Titian, Paolo Uccello, and Andrea del Castagno — making the basilica a single building in which eight centuries of mosaic style co-exist. Throughout the Republic, the basilica was not the cathedral of Venice. Officially it was the private chapel of the Doge — a deliberate political statement of independence from the Roman Catholic hierarchy. The cathedral was San Pietro di Castello on the eastern tip of the islands. Only in 1807, ten years after Napoleon extinguished the millennium-old Republic, did imperial decree transfer the patriarchal seat to San Marco, which finally became the cathedral it had never been. In 1987 the basilica was inscribed by UNESCO as part of 'Venice and its Lagoon', a rare case in which an entire city — not a single monument — was listed.

Cultural Significance

St Mark's Basilica is at once the finest Italian expression of Middle Byzantine architecture and a uniquely stratified specimen of nine centuries of accretion. The core fabric is Byzantine, but the building absorbed Romanesque sculpture, Islamic geometric ornament, and later Gothic pinnacles — a material record of Venice's role as the East-West crossroads of medieval commerce. The popular nickname Chiesa d'Oro, 'Church of Gold', derives from the more than 8,000 square meters of gold-tessera mosaic covering the domes and walls, making it one of the largest surviving programs of Byzantine mosaic art. Under the Republic of Venice the basilica was not a cathedral but the personal chapel of the Doge, an institutional statement of independence from Rome. Its decoration with Fourth Crusade spoils — the bronze horses, the Pala d'Oro, the porphyry Tetrarchs at the southwest corner — turned the building into a public treasure-house of the maritime empire. The 1987 UNESCO inscription uniquely covers the entire city rather than a single monument. Musically, San Marco was a principal center of Italian Baroque alongside Rome: its twin organs and split choir lofts gave rise to the cori spezzati polychoral style, with Giovanni Gabrieli, Claudio Monteverdi, Andrea Gabrieli, and Antonio Lotti among the maestri di cappella who shaped Western music history within these walls.

Architectural Details

St Mark's Basilica follows a Greek-cross plan with five great domes — one over each arm of the cross plus one at the crossing — modelled on the lost Church of the Holy Apostles in Constantinople. The central dome measures roughly 13 meters in interior diameter and 28 meters in height, capped by a taller wooden outer shell lifting the silhouette to about 43 meters; this double-shell construction would be repeated in later domed churches. The west facade has two stages: the lower carries five great arches and the upper rises into four pinnacles around a central terrace. The lower walls were originally bare brick, clad from the thirteenth century in marble, porphyry, and serpentine spolia largely brought from Constantinople after 1204. The four bronze horses on the loggia are Roman or Hellenistic in origin; those outside today are twentieth-century replicas, with the originals preserved indoors in the terrace museum. Interior mosaics, in gilded glass tesserae applied from the eleventh through nineteenth centuries, total over 8,000 square meters across narthex, nave, transepts, apse, and all five domes. Behind the high altar stands the Pala d'Oro, a golden altarpiece worked from 976 to 1345, the finest surviving Byzantine goldsmithing in the West. The pavement is a twelfth-century geometric marble mosaic now visibly undulating from Venice's settling lagoon foundations.