E3 2015 - Guild Wars 2: Heart of Thorns Expansion Trailer

Players can claim a guild hall, and with it a piece of Tyria, in the upcoming Heart of Thorns expansion for Guild Wars 2.

At the PC Gaming Show, ArenaNet showed off this new mechanic with a trailer. Guild Halls will be customisable--although it looks like you may need to clear out the monsters first. Guilds will also be able to set challenges for each other, as well as use their hall as a base of operations. There's also some sort of arena/brawl function, although it's not clear if that's between guild members or rival guilds.

There's still no release date for Heart of Thorns, but players can probably expect it in the near future for PC.