Ownership by teams
The ownership of a structure by a team (Blue, Green or Red) is displayed on the WvW map. Ownership of structures decides the amount of points gained by each team in the overall WvW battle.
Structures can be taken over by players from an attacking team standing in a circle at the center of the structure, while no enemy player or NPC is in the circle as well. These circles are at the center of each structure, so the attackers will have to break through the defenses first to attempt a take-over.
 Ownership by guilds
Every guild can claim a maximum of one structure for their guild on each map. They can do so by talking to the commanding NPC of an unclaimed friendly structure, typically after having just taken over the structure for their team. If the structure is just taken, it takes approximately 2 to 3 minutes before a guild member can claim the structure for the guild. The structure will then display that guild's banner and apply running guild buff`s to that location.