<Table> <Tr> <Th_colspan="2"> Sydney Opera House </Th> </Tr> <Tr> <Td_colspan="2"> Sydney Opera House in December 2015 </Td> </Tr> <Tr> <Td_colspan="2"> Location of Sydney Opera House Sydney Opera House (New South Wales) Sydney Opera House (Australia) Show map of Sydney Show map of New South Wales Show map of Australia Show all </Td> </Tr> <Tr> <Td_colspan="2"> Wikimedia © OpenStreetMap </Td> </Tr> <Tr> <Th_colspan="2"> General information </Th> </Tr> <Tr> <Th> Status </Th> <Td> Complete </Td> </Tr> <Tr> <Th> Type </Th> <Td> Performing arts centre </Td> </Tr> <Tr> <Th> Architectural style </Th> <Td> Expressionist </Td> </Tr> <Tr> <Th> Location </Th> <Td> Bennelong Point, Sydney </Td> </Tr> <Tr> <Th> Country </Th> <Td> Australia </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 33 ° 51 ′ 31.2" S 151 ° 12 ′ 50.5" E ﻿ / ﻿ 33.858667 ° S 151.214028 ° E ﻿ / - 33.858667; 151.214028 Coordinates: 33 ° 51 ′ 31.2" S 151 ° 12 ′ 50.5" E ﻿ / ﻿ 33.858667 ° S 151.214028 ° E ﻿ / - 33.858667; 151.214028 </Td> </Tr> <Tr> <Th> Elevation </Th> <Td> 4 m (13 ft) </Td> </Tr> <Tr> <Th> Current tenants </Th> <Td> <Ul> <Li> Opera Australia </Li> <Li> The Australian Ballet </Li> <Li> Sydney Theatre Company </Li> <Li> Sydney Symphony Orchestra </Li> <Li> (+ others) </Li> </Ul> </Td> </Tr> <Tr> <Th> Groundbreaking </Th> <Td> 1 March 1959 </Td> </Tr> <Tr> <Th> Construction started </Th> <Td> 1 March 1959 </Td> </Tr> <Tr> <Th> Completed </Th> <Td> 1973 </Td> </Tr> <Tr> <Th> Opened </Th> <Td> 20 October 1973 </Td> </Tr> <Tr> <Th> Inaugurated </Th> <Td> 20 October 1973 </Td> </Tr> <Tr> <Th> Cost </Th> <Td> A $102 million, equivalent to ~ A $927 million in 2016 </Td> </Tr> <Tr> <Th> Client </Th> <Td> NSW government </Td> </Tr> <Tr> <Th> Owner </Th> <Td> NSW Government </Td> </Tr> <Tr> <Th> Height </Th> <Td> 65 m (213 ft) </Td> </Tr> <Tr> <Th_colspan="2"> </Th> </Tr> <Tr> <Th> Other dimensions </Th> <Td> <Ul> <Li> length 183 m (600 ft) </Li> <Li> width 120 m (394 ft) </Li> <Li> area 1.8 ha (4.4 acres) </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Technical details </Th> </Tr> <Tr> <Th> Structural system </Th> <Td> Concrete frame & precast concrete ribbed roof </Td> </Tr> <Tr> <Th_colspan="2"> Design and construction </Th> </Tr> <Tr> <Th> Architect </Th> <Td> Jørn Utzon </Td> </Tr> <Tr> <Th> Structural engineer </Th> <Td> Ove Arup & Partners </Td> </Tr> <Tr> <Th> Main contractor </Th> <Td> Civil & Civic (level 1), M.R. Hornibrook (level 2 and 3 and interior) </Td> </Tr> <Tr> <Th_colspan="2"> Other information </Th> </Tr> <Tr> <Th> Seating capacity </Th> <Td> <Ul> <Li> Concert Hall 2,679 </Li> <Li> Joan Sutherland Theatre 1,507 </Li> <Li> Drama Theatre 544 </Li> <Li> Playhouse 398 </Li> <Li> The Studio 400 </Li> <Li> Utzon Room 210 </Li> <Li> Total 5,738 </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Website </Th> </Tr> <Tr> <Td_colspan="2"> sydneyoperahouse.com </Td> </Tr> <Tr> <Th_colspan="2"> </Th> </Tr> <Tr> <Th_colspan="2"> UNESCO World Heritage Site </Th> </Tr> <Tr> <Th> Type </Th> <Td> Cultural </Td> </Tr> <Tr> <Th> Criteria </Th> <Td> i </Td> </Tr> <Tr> <Th> Designated </Th> <Td> 2007 (31st session) </Td> </Tr> <Tr> <Th> Reference no . </Th> <Td> 166rev </Td> </Tr> <Tr> <Th> State Party </Th> <Td> Australia </Td> </Tr> <Tr> <Th> Region </Th> <Td> Asia - Pacific </Td> </Tr> <Tr> <Th_colspan="2"> </Th> </Tr> <Tr> <Th_colspan="2"> Australian National Heritage List </Th> </Tr> <Tr> <Th> Type </Th> <Td> Historic </Td> </Tr> <Tr> <Th> Criteria </Th> <Td> a, b, e, f, g, h </Td> </Tr> <Tr> <Th> Designated </Th> <Td> 12 July 2005 </Td> </Tr> <Tr> <Th> Reference no . </Th> <Td> 105738 </Td> </Tr> <Tr> <Th_colspan="2"> </Th> </Tr> <Tr> <Th_colspan="2"> New South Wales Heritage Register </Th> </Tr> <Tr> <Th> Type </Th> <Td> Built </Td> </Tr> <Tr> <Th> Criteria </Th> <Td> a, b, c, d, e, f, g </Td> </Tr> <Tr> <Th> Designated </Th> <Td> 3 December 2003 </Td> </Tr> <Tr> <Th> Reference no . </Th> <Td> 01685 </Td> </Tr> <Tr> <Th_colspan="2"> </Th> </Tr> <Tr> <Th_colspan="2"> </Th> </Tr> <Tr> <Th_colspan="2"> References </Th> </Tr> <Tr> <Td_colspan="2"> Coordinates </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Sydney Opera House </Th> </Tr>

What is the main purpose of the sydney opera house