The Sydney Opera House is one of the most recognizable buildings in the world. Its sailing roof shells and complex engineering have inspired visitors for decades.
This quiz looks at how the structure was built, highlighting the design contest and the math used. You will see questions about the architect’s struggles, the main materials, and final costs.
When you finish, try our other trivia. We feature quizzes on famous buildings, architects, and UNESCO architecture.
In which Australian state is the iconic Opera House located?
New South Wales
New South Wales
Victoria
Victoria
Queensland
Queensland
Western Australia
Western Australia
On which geographical feature was the structure famously built?
Circular Quay station square
Circular Quay station square
The water’s edge at Bennelong Point
The water’s edge at Bennelong Point
The middle of the Royal Botanic Garden
The middle of the Royal Botanic Garden
The top of the Harbour Bridge
The top of the Harbour Bridge
Who was the Danish architect that won the international design competition in 1957?
Frank Lloyd Wright
Frank Lloyd Wright
Jørn Utzon
Jørn Utzon
Le Corbusier
Le Corbusier
Alvar Aalto
Alvar Aalto
The distinct roof shells are most commonly said to be inspired by which shapes?
Waves crashing on the shore
Waves crashing on the shore
A cluster of clouds
A cluster of clouds
Mountain peaks
Mountain peaks
A yacht’s sails
A yacht’s sails
In which decade was the construction of the building finally completed and opened?
1960s
1960s
1950s
1950s
1980s
1980s
1970s
1970s
Which structural engineering firm was integral to solving the complex geometry of the roof shells?
Norman Foster
Norman Foster
Ove Arup
Ove Arup
Zaha Hadid
Zaha Hadid
Renzo Piano
Renzo Piano
What is the primary material used to cover the outer surface of the roof shells?
Concrete panels
Concrete panels
Copper sheets
Copper sheets
Glass shards
Glass shards
Ceramic tiles
Ceramic tiles
After several iterations, what mathematical form was used to construct the ribs of the roof shells?
Cylindrical segments
Cylindrical segments
Hyperbolic paraboloids
Hyperbolic paraboloids
Parabolic curves
Parabolic curves
Spherical geometry
Spherical geometry
What primary factor led to Jørn Utzon resigning from the project in 1966?
Foundation instability
Foundation instability
A health crisis
A health crisis
Lack of skilled labor
Lack of skilled labor
Budget overruns and design arguments
Budget overruns and design arguments
What are the base platforms of the Opera House primarily constructed from?
Concrete and granite
Concrete and granite
Steel frames and glass
Steel frames and glass
Aluminium and composite materials
Aluminium and composite materials
Timber and polished stone
Timber and polished stone
What color combination of tiles gives the shells their distinctive appearance?
White and cream matte
White and cream matte
Glossy white and matte cream
Glossy white and matte cream
Pure white and light blue
Pure white and light blue
Off-white and grey stone
Off-white and grey stone
In which year was the Opera House inscribed as a UNESCO World Heritage site?
2007
2007
2009
2009
2005
2005
2003
2003
How does UNESCO officially describe the significance of the Opera House?
The world’s only opera house on water
The world’s only opera house on water
The tallest building in the city
The tallest building in the city
The largest building in the southern hemisphere
The largest building in the southern hemisphere
A masterpiece of 20th-century architecture
A masterpiece of 20th-century architecture
Who officially opened the building in 1973?
The Australian Prime Minister
The Australian Prime Minister
Prince Philip
Prince Philip
Queen Elizabeth II
Queen Elizabeth II
The Governor of New South Wales
The Governor of New South Wales
For which prestigious award was Utzon chosen in 2003, late in his life, for his work on the Opera House?
RIBA Gold Medal
RIBA Gold Medal
AIA Gold Medal
AIA Gold Medal
Stirling Prize
Stirling Prize
Pritzker Prize
Pritzker Prize
Which feature, famously rejected during construction, was later added to the site’s master plan?
A car park under the building
A car park under the building
A rooftop garden installation
A rooftop garden installation
A bridge linking the site to the CBD
A bridge linking the site to the CBD
A pedestrian forecourt redesign
A pedestrian forecourt redesign
What was the main reason the initial design of the roof shells had to be modified?
Saltwater corrosion on the foundation would cause a collapse
Saltwater corrosion on the foundation would cause a collapse
The shape was geometrically undefined and structurally unfeasible
The shape was geometrically undefined and structurally unfeasible
The weight of the tiles would cause the thin concrete to crack
The weight of the tiles would cause the thin concrete to crack
High acidity in the harbour air would corrode the concrete
High acidity in the harbour air would corrode the concrete
Who took over as the lead design architect after Jørn Utzon’s resignation to finish the interiors?
Australian architect Peter Hall
Australian architect Peter Hall
Danish architect Arne Jacobsen
Danish architect Arne Jacobsen
American architect Frank Gehry
American architect Frank Gehry
British architect Norman Foster
British architect Norman Foster
Which internal venue is the largest space within the entire Opera House?
Joan Sutherland Theatre
Joan Sutherland Theatre
Playhouse
Playhouse
Concert Hall
Concert Hall
Drama Theatre
Drama Theatre
What was the final cost of construction when it opened in 1973, significantly higher than original estimates?
142 million dollars
142 million dollars
82 million dollars
82 million dollars
122 million dollars
122 million dollars
102 million dollars
102 million dollars
Jørn Utzon was originally from which country?
Denmark
Denmark
Norway
Norway
Sweden
Sweden
Finland
Finland
What was one of the major complaints regarding the internal functionality of the building upon its completion?
The orchestra pit was entirely omitted from the design
The orchestra pit was entirely omitted from the design
The audience seating was composed of backless concrete benches
The audience seating was composed of backless concrete benches
The building completely lacked dressing rooms for performers
The building completely lacked dressing rooms for performers
The acoustics were deemed poor for opera singing
The acoustics were deemed poor for opera singing
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