This plugin lets you protect naturally spawned structures from unwanted damage. It is fully configurable. The following types of damage are currently supported:
- Blocks getting removed/modified by mobs like Endermen
- Explosion from Creepers/TNT
- Fire
These mentiones ones are enabled in the default config.yml under "entities".
I added the mansion as protected structure with the radius of 150 blocks under "structures". If you want to add more, you might find out best radius values by yourself.