Radvila Architecture
Radvila Architecture is an Imperial Age Polish Sejm technology requiring Zamojski Architecture. It increases Villager tree gathering by 30%, raises the Sejm’s passive Wood generation by 15%, and adds 25% hit points to buildings.

Research profile
- Age
- Imperial Age
- Civilization
- Poles
- Research location
- Sejm
- Prerequisite
- Zamojski Architecture
- Research time
- 40 seconds
- Food cost
- 900
- Coin cost
- 900
Effect & research conditions
Research costs 900 Food and 900 Coin and takes 40 seconds. Complete Zamojski Architecture first. The three effects apply to different parts of the economy: Villagers collecting Wood, the Sejm’s passive Wood income and building durability. Radvila Architecture leads to the next listed Polish architecture research, so account for the prerequisite and continued Sejm investment.
Research condition
Available to Poles from the Imperial Age. Research it at Sejm. It requires Zamojski Architecture.
When to research
Research when the economy can benefit from sustained Wood gathering and the player expects important buildings to remain under pressure. The gathering effect is strongest with workers on trees; the passive trickle continues without workers, while extra building hit points help defensive structures survive. Compare the high cost with the remaining match time and the buildings or production that would otherwise be delayed.
Three effects with different payoff windows
Radvila Architecture improves a worker resource, passive income and structure durability at once, but each repays the investment differently. The 30% tree-gathering increase matters only while Villagers chop; the Sejm’s Wood increase continues passively; and the hit-point bonus benefits buildings that may be attacked. A player focused on immediate army production may not recover the research cost, while a long Imperial game with active Wood demand and contested bases can use all three effects. Keep workers and the Sejm protected during the research chain.