I just bought a new piece of land, hoping to get some new shoreline. But after I bought it and was looking around, I saw these odd structures. They look like mini canals with weird stone houses carefully placed. Any idea what they are?

I'm having trouble describing them so regular google searches aren't working.

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2 Answers 2


I was quite surprised when I saw those images because to my knowledge, Cities Skylines is not a game about defending the motherland and repelling invading armies. Those structures are a system of defensive bunkers and trenches not too unlike the ones seen on the beaches of Normandy during D-Day. Here's a picture of an actual bunker from the side.


I couldn't find an overhead so instead I also included a picture from Battlefield 1942.


This system is noticeably smaller but I believe it shows the point.

However, while you are prepared to fight and die to hold the line now, you won't be able to actually use these structures for anything due to the lack of invading enemies. They are purely decorational in the game.

  • 1
    Thanks! Using the search term "trenches", I stumbled across this page . So apparently others have found them too. I guess it's just a fun thing the developers built in.
    – emudrak
    Jan 26, 2017 at 18:23

Those do not appear to have any purpose other than to look good on a map. They are ruins of old infrastructure. There are several that exist abandoned factories, canals. It looks like you have canals. You can keep them for the look, or bulldoze them.

  • I think this should be most appropriate answer.
    – Elangesh
    Jan 29, 2017 at 22:02

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