St Mark's Campanile (Italian: Campanile di San Marco, Venetian: Canpanièl de San Marco) is the bell tower of St Mark's Basilica in Venice, Italy. The campanile is a reconstruction completed in 1912, the previous tower having collapsed in 1902. At 98.6 metres (323 ft) in height, it is the tallest structure in Venice and is colloquially termed "el paròn de casa" (the master of the house). It is one of the most recognizable symbols of the city.
Located in Saint Mark's Square near the mouth of the Grand Canal, the campanile was initially intended as a watchtower to sight approaching ships and protect the entry to the city. It also served as a landmark to guide Venetian ships safely into harbour. Construction began in the early tenth century and continued sporadically over time as the tower was slowly raised in height. A belfry and a spire were first added in the twelfth century. In the fourteenth century the spire was gilded, making the tower visible to distant ships in the Adriatic. The campanile reached its full height in 1514 when the belfry and spire were completely rebuilt on the basis of an earlier Renaissance design by Giorgio Spavento. Historically, the bells served to regulate the civic and religious life of Venice, marking the beginning, pauses, and end of the work day; the convocation of government assemblies; and public executions.
The campanile stands alone in the square, near the front of St Mark's Basilica. It has a simple form, recalling its early defensive function, the bulk of which is a square brick shaft with lesenes, 12 metres (39 ft) wide on each side and 50 metres (160 ft) tall. The belfry is topped by an attic with effigies of the Lion of St Mark and allegorical figures of Venice as Justice. The tower is capped by a pyramidal spire at the top of which there is a golden weather vane in the form of the archangel Gabriel.
The Magyar raids into northern Italy in 898 and again in 899 resulted in the plundering and brief occupation of the important mainland cities of Cittanova, Padua, and Treviso as well as several smaller towns and settlements in and around the Venetian Lagoon. Although the Venetians ultimately defeated the Magyars on the Lido of Albiola on 29 June 900 and repelled the incursion, Venice remained vulnerable by way of the deep navigable channel that allowed access to the harbour from the sea. In particular, the young city was threatened by the Slavic pirates who routinely menaced Venetian shipping lanes in the Adriatic.
A series of fortifications was consequently erected during the reign of Doge Pietro Tribuno (in office 887–911) to protect Venice from invasion by sea. These fortifications included a wall that started at the rivulus de Castello (Rio del Palazzo), just east of the Doge's Castle, and eventually extended along the waterfront to the area occupied by the early Church of Santa Maria Iubanico. However, the exact location of the wall has not been determined nor how long it was there beyond the period of crisis.
Integral to this defensive network, an iron harbour chain that could be pulled taut across the Grand Canal to impede navigation and block access to the centre of the city was installed at the height of San Gregorio. In addition, a massive watchtower was built in Saint Mark's Square. Probably begun during the reign of Tribuno, it was also intended to serve as a point of reference to guide Venetian ships safely into the harbour, which at that time occupied a substantial part of the area corresponding to the present-day piazzetta.
The defensive system begun under Pietro Tribuno was likely provisional, and construction may have been limited to the reinforcement of pre-existing structures. Medieval chronicles suggest that the laying of the foundation for the tower continued during the reigns of his immediate successors, Orso II Participazio (in office 912–932) and Pietro II Candiano (in office 932–939). Delays were likely due to the difficulty in developing suitable construction techniques as well as locating and importing building materials. Some of the early bricks dated from the late Roman Empire and were salvaged from ruins on the mainland. For the foundation, alder piles, roughly 1.5 metres (4.9 ft) in length and 26 centimetres (10 in) in diameter, were driven into a dense layer of clay located around 5 metres (16 ft) below the surface. The piles were topped with two layers of oak planking on which multiple layers of stone were laid.
Fabrication of the actual tower seems to have begun during the brief reign of Pietro Participazio (in office 939–942) but did not progress far. Political strife during the ensuing reigns of Pietro III Candiano (in office 942–959) and, particularly, Pietro IV Candiano (in office 959–976) precluded further work. Under Pietro I Orseolo (in office 976–978), construction resumed, and it advanced considerably during the reign of Tribuno Memmo (in office 979–991). No further additions were made to the tower until the time of Domenico Selvo (in office 1071–1084), an indication that it had reached a serviceable height and could be used to control access to the city. Selvo increased the height to around 40 metres (130 ft), which corresponded with the fifth of the eight present windows. Doge Domenico Morosini (in office 1147–1156) then raised the height to the actual level of the belfry and is credited with the construction of the bell tower. His portrait in the Doge's Palace shows him together with a scroll that lists the significant events of his reign, among which is the construction of the bell tower: "Sub me admistrandi operis campanile Sancti Marci construitur...".
The first belfry was added under Vitale II Michiel (in office 1156–1172). It was surmounted by a pyramidal spire in wood that was sheathed with copper plates. Around 1329, the belfry was restored and the spire reconstructed. The spire itself was particularly prone to fire due to the wooden framework. It burned when lightning struck the tower on 7 June 1388, but it was nevertheless rebuilt in wood. On this occasion, the copper plates were covered in gold leaf, rendering the tower visible to distant ships in the Adriatic. Marcantonio Sabellico records in his guide to the city, De Venetae urbis situ (c. 1494), that mariners looked to the gilded spire as a 'welcoming star':
Its peak is high such that the splendour of the gold with which it is sheathed manifests itself to navigators at 200 stadions like a star that greets them. (Summus apex adeo sublimis ut fulgor auri quo illitus est ad ducenta stadia ex alto navigantibus velut saluberrimum quoddam occurrat sydus.)
The spire was once again destroyed in 1403 when flames from a bonfire lit to illuminate the tower in celebration of the Venetian victory over the Genoese at the Battle of Modon enveloped the wooden frame. It was rebuilt between 1405 and 1406. Lightning again struck the tower during a violent storm on 11 August 1489, setting ablaze the spire which eventually crashed into the square below. The bells fell to the floor of the belfry, and the masonry of the tower itself cracked. In response to this latest calamity, the procurators of Saint Mark de supra, the government officials responsible for the public buildings around Saint Mark's Square, decided to rebuild the belfry and spire completely in masonry so as to prevent future fires. The commission was given to their proto (consultant architect and buildings manager), Giorgio Spavento. Although the design was submitted within a few months, the estimated cost was 50,000 ducats, and financial constraints in the period of recovery from the wars in Lombardy against Milan (1423–1454) delayed construction. Instead, Spavento limited repairs to the structural damage to the tower. A temporary clay tile roof was placed over the belfry, and the bells that were still intact were rehung. The outbreak in 1494 of the Italian wars for the control of the mainland precluded any further action.
On 26 March 1511, a violent earthquake further damaged the fragile structure and opened a long fissure on the northern side of the tower, making it necessary to immediately intervene. Upon the initiative of procurator Antonio Grimani, the temporary roof and the belfry were removed and preparations were made to finally execute Spavento's design. The work was carried out under the direction of Pietro Bon who had succeeded Spavento as proto in 1509. To finance the initial work, the procurators sold unclaimed objects in precious metals that had been deposited in the treasury of St Mark's in 1414 for a value of 6,000 ducats. By 1512, the tower itself had been completely repaired, and work began on the new belfry made in Istrian stone.