Question about buildings

[JudgeDredd]

When building in one castle/city, do other castles/cities benefit from that building?

For example, if I build a tanner in one city, do ALL my troops recruited in ALL my cities receive the padded armour upgrade? Or are buildings specific to each castle/city where troops created in a castle/city with a tanner get the padded armour, but troops built in other cities do NOT get the padded armour?

I hope that makes sense...I was trying to simplify it but made it more complicated I think.

Thx

[pwijnands]

Armour buildings work per settlement only.

[Invincible]

Only some higher guilds have effects on all settlements you own. Guilds are special buildings.

[Aldgarkalaughskel]

Trade and economical buildings (f.e. roads, ports, markets) have an extraterritorial effect, as they add to the trade capacity to the city thus enable to trade more goods to neighboring cities.

But other buildings effect the settlement only.