Nobles from factions wanting to learn how to use the hidden route can stack with a noble about to move across the route. A ship in an ocean province may sail into an adjoining land province. Port Cities A city in a province adjoining an ocean will have been founded on the best spot for an ocean port. The ocean will only be accessible through the port city in this case, and not through the surrounding region. However, ships may sail into and out of the port city itself.
Every province has a civilization level.
There is no fixed civ level cap. However, only the first building of each type counts towards the civ level in a location. Any fractional remainder is dropped after the contributions are summed. Only the first building or feature of each type counts toward the civilization level. For example, if two inns in a province, only the first would add a civ point to the total.