Talk:Courtyard of the Hearth/@comment-25993431-20150201195613/@comment-3250527-20150201222055

If you're talking about how the 69th Floor was based on Las Vegas, and how Kirito, Klein, Mimura, and Twanmi destroyed the 69th Floor, bear in mind that you cannot raze the terrain that has already been set there. If players try to damage the set terrain, the system will reprimand them with a notice (remember "Immortal Object"?).

That being said, unless it's part of a quest, terrain cannot be destroyed. Only the system has the authority to destroy terrain.