diff --git a/doc/classes/GeometryInstance.xml b/doc/classes/GeometryInstance.xml
index 93db093c8b6..981873b1fe0 100644
--- a/doc/classes/GeometryInstance.xml
+++ b/doc/classes/GeometryInstance.xml
@@ -14,32 +14,50 @@
 	</methods>
 	<members>
 		<member name="cast_shadow" type="int" setter="set_cast_shadows_setting" getter="get_cast_shadows_setting" enum="GeometryInstance.ShadowCastingSetting">
+			The selected shadow casting flag. See SHADOW_CASTING_SETTING_* constants for values.
 		</member>
 		<member name="extra_cull_margin" type="float" setter="set_extra_cull_margin" getter="get_extra_cull_margin">
+			The extra distance added to the GeometryInstance's bounding box ([AABB]) to increase its cull box.
 		</member>
 		<member name="lod_max_distance" type="float" setter="set_lod_max_distance" getter="get_lod_max_distance">
+			The GeometryInstance's max LOD distance.
 		</member>
 		<member name="lod_max_hysteresis" type="float" setter="set_lod_max_hysteresis" getter="get_lod_max_hysteresis">
+			The GeometryInstance's max LOD margin.
 		</member>
 		<member name="lod_min_distance" type="float" setter="set_lod_min_distance" getter="get_lod_min_distance">
+			The GeometryInstance's min LOD distance.
 		</member>
 		<member name="lod_min_hysteresis" type="float" setter="set_lod_min_hysteresis" getter="get_lod_min_hysteresis">
+			The GeometryInstance's min LOD margin.
 		</member>
 		<member name="material_override" type="Material" setter="set_material_override" getter="get_material_override">
+			The material override for the whole geometry.
+			If there is a material in material_override, it will be used instead of any material set in any material slot of the mesh.
 		</member>
 		<member name="use_in_baked_light" type="bool" setter="set_flag" getter="get_flag">
+			If [code]true[/code] this GeometryInstance will be used when baking lights using a [GIProbe] and/or any other form of baked lighting.
 		</member>
 	</members>
 	<constants>
 		<constant name="SHADOW_CASTING_SETTING_OFF" value="0" enum="ShadowCastingSetting">
+			Will not cast any shadows.
 		</constant>
 		<constant name="SHADOW_CASTING_SETTING_ON" value="1" enum="ShadowCastingSetting">
+			Will cast shadows from all visible faces in the GeometryInstance.
+			Will take culling into account, so faces not being rendered will not be taken into account when shadow casting.
 		</constant>
 		<constant name="SHADOW_CASTING_SETTING_DOUBLE_SIDED" value="2" enum="ShadowCastingSetting">
+			Will cast shadows from all visible faces in the GeometryInstance.
+			Will not take culling into account, so all faces will be taken into account when shadow casting.
 		</constant>
 		<constant name="SHADOW_CASTING_SETTING_SHADOWS_ONLY" value="3" enum="ShadowCastingSetting">
+			Will only show the shadows casted from this object.
+			In other words: The actual mesh will not be visible, only the shadows casted from the mesh.
 		</constant>
 		<constant name="FLAG_USE_BAKED_LIGHT" value="0" enum="Flags">
+			Will allow the GeometryInstance to be used when baking lights using a [GIProbe] and/or any other form of baked lighting.
+			Added documentation for GeometryInstance and VisualInstance
 		</constant>
 		<constant name="FLAG_MAX" value="1" enum="Flags">
 		</constant>
diff --git a/doc/classes/VisualInstance.xml b/doc/classes/VisualInstance.xml
index 2c9fe4f43ed..bd668807192 100644
--- a/doc/classes/VisualInstance.xml
+++ b/doc/classes/VisualInstance.xml
@@ -13,12 +13,15 @@
 			<return type="AABB">
 			</return>
 			<description>
+				Returns the [AABB] (also known as the bounding box) for this VisualInstance.
 			</description>
 		</method>
 		<method name="get_transformed_aabb" qualifiers="const">
 			<return type="AABB">
 			</return>
 			<description>
+				Returns the transformed [AABB] (also known as the bounding box) for this VisualInstance.
+				Transformed in this case means the [AABB] plus the position, rotation, and scale of the [Spatial]s [Transform]
 			</description>
 		</method>
 		<method name="set_base">
@@ -27,11 +30,15 @@
 			<argument index="0" name="base" type="RID">
 			</argument>
 			<description>
+				Sets the base of the VisualInstance, which changes how the engine handles the VisualInstance under the hood.
+				It is recommended to only use set_base if you know what you're doing.
 			</description>
 		</method>
 	</methods>
 	<members>
 		<member name="layers" type="int" setter="set_layer_mask" getter="get_layer_mask">
+			The render layer(s) this VisualInstance is drawn on.
+			This object will only be visible for [Camera]s whose cull mask includes the render object this VisualInstance is set to.
 		</member>
 	</members>
 	<constants>