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
flagItaly
54%
27%
18%
0%
11
flagGermany
46%
7%
30%
15%
13
flagPoland
26%
36%
32%
4%
1075
flagthe United Kingdom
25%
44%
29%
0%
27
flagUnknown
20%
50%
23%
5%
171

Gender

men21%
women23%
concrete
21%
23%
marble
45%
27%
sandstone
28%
43%
wood
4%
6%

Language versions

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answers
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What material is the dome of Rome Pantheon made from?
25
36%

Details

Author: smyru
Illustration: Gonzalo Malpartida
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