What material is the dome of Rome Pantheon made from?

concrete
marble
sandstone
wood
The temple - 43 meter in diameter - was built by emperor Hadrian. Its dome with 8-meter wide oculus was built of un­re­in­forced concrete that has been a mystery for ages. The weight of Roman concrete used to build the mono­litic struc­ture is merely 1/5 of common con­crete. Such effect was achieved by mixing in of volcanic tuff and pumice.

Answers distribution

concrete
marble
sandstone
wood
answers
flagGermany
41%
8%
33%
16%
12
flagPoland
30%
30%
34%
3%
703
flagthe United Kingdom
25%
45%
29%
0%
24
flagUnknown
16%
52%
26%
2%
108

Gender

men21%
women28%
concrete
21%
28%
marble
42%
22%
sandstone
32%
42%
wood
4%
6%

Language versions

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What material is the dome of Rome Pantheon made from?
18
38%

Details

Author: smyru
Illustration: Gonzalo Malpartida
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