Are you referring to the PoI system that we implemented with the 2.7 update?
Currently this only works for Obelisks but our development team is working on expanding this system to other important landmarks and NPC spawns on the map.
You can read more on how this currently works in the patch notes
- Added new Point of Interest protection system. In this initial implementation it will protect obelisks in the Exiled Lands. This new system will periodically check the surroundings of these locations. Buildings found blocking access to these resources will be automatically destroyed.
- This is controlled via Server Setting, and comes disabled by default.
PoiProtectionEnabled=false