<Table> <Tr> <Th_colspan="2"> St. Mark's cathedral </Th> </Tr> <Tr> <Td_colspan="2"> Patriarchal Cathedral Basilica of Saint Mark </Td> </Tr> <Tr> <Td_colspan="2"> Basilica Cattedrale Patriarcale di San Marco (Italian) </Td> </Tr> <Tr> <Td_colspan="2"> Saint Mark's Basilica viewed from Piazza San Marco </Td> </Tr> <Tr> <Td_colspan="2"> 45 ° 26 ′ 04" N 12 ° 20 ′ 23" E ﻿ / ﻿ 45.43444 ° N 12.33972 ° E ﻿ / 45.43444; 12.33972 Coordinates: 45 ° 26 ′ 04" N 12 ° 20 ′ 23" E ﻿ / ﻿ 45.43444 ° N 12.33972 ° E ﻿ / 45.43444; 12.33972 </Td> </Tr> <Tr> <Th> Location </Th> <Td> Venice </Td> </Tr> <Tr> <Th> Country </Th> <Td> Italy </Td> </Tr> <Tr> <Th> Denomination </Th> <Td> Roman Catholic </Td> </Tr> <Tr> <Th> Website </Th> <Td> Saint Mark's Basilica </Td> </Tr> <Tr> <Th_colspan="2"> History </Th> </Tr> <Tr> <Th> Status </Th> <Td> Cathedral, minor basilica </Td> </Tr> <Tr> <Th> Earlier dedication </Th> <Td> 1084, 1093, 1102 </Td> </Tr> <Tr> <Th> Consecrated </Th> <Td> 1117 </Td> </Tr> <Tr> <Th_colspan="2"> Architecture </Th> </Tr> <Tr> <Th> Style </Th> <Td> Italo - Byzantine and Gothic </Td> </Tr> <Tr> <Th> Groundbreaking </Th> <Td> 978 </Td> </Tr> <Tr> <Th> Completed </Th> <Td> 1092 </Td> </Tr> <Tr> <Th_colspan="2"> Specifications </Th> </Tr> <Tr> <Th> Length </Th> <Td> 76.5 metres (251 ft) </Td> </Tr> <Tr> <Th> Width </Th> <Td> 62.5 metres (205 ft) </Td> </Tr> <Tr> <Th> Number of domes </Th> <Td> 5 </Td> </Tr> <Tr> <Th> Dome height (outer) </Th> <Td> 43 metres (141 ft) </Td> </Tr> <Tr> <Th> Dome height (inner) </Th> <Td> 28.15 metres (92.4 ft) </Td> </Tr> <Tr> <Th_colspan="2"> Administration </Th> </Tr> <Tr> <Th> Archdiocese </Th> <Td> Patriarchate of Venice </Td> </Tr> </Table> <Tr> <Th_colspan="2"> St. Mark's cathedral </Th> </Tr>

How long did it take to build st mark's basilica
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