Work in Progress: The Knights Templar and House of Lancaster civilizations aren't fully updated and miss stats, abilities and upgrades.
Explorer will continue to be updated over the next few weeks for both old and new civs.
Siege Technology

Siege Works

New carpentry techniques increase the health of siege units by +20%.
Available in the Imperial Age (IV)

Researched at

Available for all civilizations

This unit is available for the below civilizations. Click on a civilization to see more detailed information, including specific bonuses and upgrades.

Patch History

Season Two Update

Siege Works armor bonus increased from 3 to 10

Mongols' Improved Siege Works armor bonus increased from 4 to 15

Research time reduced from 1350 to 1080 seconds

Season One Update

Moved from the Siege Workshop to the University

Can no longer be researched at the Chinese Astronomical Clocktower

Cost increased from 150 Wood, 350 Gold to 300 Wood, 700 Gold

Research time increased from 60 to 90 seconds

Delhi Research time increased from 900 to 1350 seconds

Costs
300
600
1:30

Age of Empires IV© Microsoft Corporation. AoE4World.com was created under Microsoft's "Game Content Usage Rules" using assets from Age of Empires IV , and it is not endorsed by or affiliated with Microsoft.