- "In time, the First Men adopted the Children's gods as their own. Most castles at that time contained a godswood with a weirwood or a heart tree at its center."
- ―Bran Stark
Weirwoods have red sap, which leaks out of the deep cuts in the trunk made for the eyes of the faces - giving the appearance that they are weeping tears of blood. The faces are thought to have been carved by the Children of the Forest and were later worshiped by the First Men as well.