Majority of First World War base XVII:12 in [Krepost Sveaborg](https://en.wikipedia.org/wiki/Krepost_Sveaborg) land front defense line in Nuotiopuisto, Paloheinä, Helsinki, Finland. The base was built in 1915 - 1918.
All base structures (some are issing from the model):
* 30 meters of concrete reinforced trench
* 4 machine gun positions
* 3 three observation positions
* 1 searchlight position
* 4 shelter rooms in frontline and 4 in back
More info:
* [Location in Google Maps](https://goo.gl/maps/srwvmdabhSTBYC526)
* [Wikipedia: Krepost Sveaborg](https://en.wikipedia.org/wiki/Krepost_Sveaborg)
* [John Lagerstedt , Markku Saari: Krepost Sveaborg](http://www.novision.fi/viapori/eavaus.htm)
* [Finnish Heritage Agency site info](https://www.kyppi.fi/to.aspx?id=112.1000013709) (only in finnish)