Tier 2 areas are unlocked 24 hours after the Wild Competition event in the kingdom timeline.
Early in each kingdom's timeline, a land rush typically occurs in order to maximize ownership of alliance resource nodes. Tier 1 areas comprise most of the map and, as such, contain most of the alliance resources available. All Tier 1 areas can be accessed freely by all governors until 24 hours after the Rising of Heroes event in the kingdom timeline has completed, after which time alliances may capture the Tier 1 passes to restrict movement into and out of their area. Six of these areas exist, unofficially referred to as such because they are separated from each other by Tier 1 passes.
When the city is founded, it will spawn randomly in a Tier 1 area in the outer rim of the kingdom. Tier 2 areas are always located in a shape around the center of the kingdom, in which the Tier 3 area is always in the exact center. In the map above, several areas are indicated: Each kingdom is randomly generated so no two kingdoms will be exactly alike, however, they all share a general shape and have several characteristics in common.