Stone arch bridge in Urjalankylä, Urjala, Finland. It's built in 1871, the cold wall technology.
<a href="//commons.wikimedia.org/wiki/User:Zindox" title="User:Zindox">Ohikulkija</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>