HOW BIG
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Architecture

Sydney Opera House: size, dimension and comparison

The adopted reference is about 183 m.

building length ≈ 183 m

183 m = 0.183 km. A meter contains 100 centimeters, or 1,000 millimeters.

1973Documented construction or demonstration

Australia · shell-shaped roofs recognisable at first glance.

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Sydney Opera House, interpreted illustration
Interpreted illustration · dimension stated in the fact sheet.
How Big · interpreted illustration

What does this number measure?

Façade supplier Permasteelisa gives a length of 183 m, a width of 120 m and a height of 67 m. Here the comparison uses the building's horizontal length, without including the whole peninsula.

Compare the stated dimensions

The comparison uses the number in each fact sheet: altitude, height, diameter, length or distance, depending on the reference. Two values in metres do not necessarily describe the same property.

Compare with Great Pyramid of Giza in the explorer →

Source and limitations

Representative or rounded dimensions according to the source; these are not a confidence interval.

Realistic interpreted illustration, not a photograph, of the Sydney Opera House in profile. The 183 m length covers the building and its own podium, excluding the forecourt and peninsula. The architectural details do not constitute a survey.

Documented construction or demonstration: 1973.

Illustration sources

How Big · interpreted illustration

Source coverage: Interpreted architectural profile; only the documented length of 183 m is calibrated, not a certified architectural reconstruction.

How Big

Source coverage: Side of the base plan, not the temple's height or a perspective diagonal.