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.
Building Technology

Slate and Stone Construction

Holy Roman Empire
All buildings gain +5 fire armor.
Available in the Castle Age (III)

Researched at

Keep
Elzbach Palace
Costs
250
100
1:00

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