400
15030sPowerful siege engine effective at destroying buildings and walls over a great distance.
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Istanbul Observatory
Siege Works: New carpentry techniques increase the health of siege units by +20%.
Siege Workshop
Greased Axles: Increase the movement speed of siege engines by +15%.
Geometry: Increase damage of Trebuchets by +20%.
Other
Siege Crews: Allows all siege engines to be garrisoned by infantry. While garrisoned, attack and setup speed is increased by +25%.
