City
From Sons of Valhalla Official Wiki
Resources to upgrade the city can be obtained by defeating enemies. In addition the city will receive 150 Hack Silver, 25 Food and 25 Wood at regular intervals.
At both ends of the city are gates, which block enemy access.
New buildings can be constructed at material piles. Buildings can only be repaired or upgraded if there are no enemies nearby.
Level 1 buildings have 25 HP. Level 2 buildings have 50 HP.