My demesne has several hospitals (about 6). My primary county hospital is maxed out, but I want to move my capital to Constantinople (more central location in my empire). So 2 questions: Do hospitals stack benefits? And, do I always get the benefit of my "best" hospital, or only my capital's hospital?
The following only apply to the province the hospital is located in:
- Hospital level
- Disease resistance
- Tech spread bonus
The following stack from all hospitals in your realm (including vassal hospitals):
- Tech Points
The following stack only from hospitals you directly own:
- Temple Vassal Opinion
Note: tested on Patch 18.104.22.168
The hospital's benefits are localized to the county, so the only ones that really stack are the upgrades that give you piety and prestige.