here is a Guild Siege Battle on Fury Server PVP
https://www.youtube.com/watch?v=u2ZeUUIsIJc
here is part 2 of the guild siege objective is to destroy the other guilds keep and have some of your guild stay in their guild city to defend. once you destroy the other guild city you win that land plot and the other guild has to rebuild from scratch. when tier 1 guild city cost around 350 gold or so, tier 2 is like around 800gold and tier 3 is the highest atm is around 500k gold. that is not including resources farmed in Potatin ,Lachesish Plains, Purple Lotus Swamp are the resource zones.