History of Bridges
Bridges History
Bridges Facts
Famous Bridges
Model Bridge Building
Culvert On River
Culverts on crossing of river Feccia between San Galgano and Pentolina.
Source:
https://upload.wikimedia.org/wikipedia/commons/c/c8/Feccia_001.JPG
Author:
https://commons.wikimedia.org/wiki/User:Hans_G._Oberlack, Hans G. Oberlack
Licence:
Creative Commons Attribution 3.0 Unported