The world map is randomly generated at the beginning of each game. Every world is filled with settlements which can be independent or belong to Noble Factions. A typical setup would be 3 Houses that control 4 settlements each and roughly another 5 independent settlements.  Settlements are where the Player Company can resupply, find new recruits, enemy camps, secret locations that can be pillaged and destroyed.
Various terrain provide different environment for tactical fight.
With update [0.6.0.20] weather was added. Light snow can fall in the tundra and frozen north, and the latter can see even full-grown snow storms. For now, these weather effects are purely cosmetic.