Keep Tower

Place to secure castle entrance.

Name	Costs
Keep Tower	4200 4300 4400 4000 2500	0	08d08h00m

Ability
Provides	Requires
+20% Building hit point Keep Tower improvement Keep Tower improvement to city	Building is Large Castle or Royal Castle User has City Defence technology

Buildings to improve
Name	Construction Costs			Culture Points	Trade Points
Large Castle	4500 4250 4600 4250 4000	0	16d16h00m	50	25
Royal Castle	12500 12200 12500 12400 9000	0	02d08h00m	100	50

Keep Tower techtree