diff --git a/cookbook/migrations/0193_space_internal_note.py b/cookbook/migrations/0193_space_internal_note.py
new file mode 100644
index 000000000..d29d4f75d
--- /dev/null
+++ b/cookbook/migrations/0193_space_internal_note.py
@@ -0,0 +1,18 @@
+# Generated by Django 4.1.9 on 2023-06-21 13:19
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cookbook', '0192_food_food_unique_open_data_slug_per_space_and_more'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='space',
+            name='internal_note',
+            field=models.TextField(blank=True, null=True),
+        ),
+    ]
diff --git a/cookbook/models.py b/cookbook/models.py
index 70b505b0d..46af7e786 100644
--- a/cookbook/models.py
+++ b/cookbook/models.py
@@ -270,6 +270,8 @@ class Space(ExportModelOperationsMixin('space'), models.Model):
     food_inherit = models.ManyToManyField(FoodInheritField, blank=True)
     show_facet_count = models.BooleanField(default=False)
 
+    internal_note = models.TextField(blank=True, null=True)
+
     def safe_delete(self):
         """
         Safely deletes a space by deleting all objects belonging to the space first and then deleting the space itself
diff --git a/cookbook/templates/base.html b/cookbook/templates/base.html
index e775bee09..0b0d12b24 100644
--- a/cookbook/templates/base.html
+++ b/cookbook/templates/base.html
@@ -118,6 +118,10 @@
                 <a class="nav-link" href="{% url 'view_books' %}"><i
                         class="fas fa-fw fa-book-open"></i> {% trans 'Books' %}</a>
             </li>
+            {% plugin_main_nav_templates as plugin_main_nav_templates %}
+            {% for pn in plugin_main_nav_templates %}
+                {% include pn %}
+            {% endfor %}
         </ul>
 
         <ul class="navbar-nav ml-auto">
diff --git a/cookbook/templatetags/custom_tags.py b/cookbook/templatetags/custom_tags.py
index 5ade2985a..7668e1234 100644
--- a/cookbook/templatetags/custom_tags.py
+++ b/cookbook/templatetags/custom_tags.py
@@ -140,6 +140,14 @@ def plugin_dropdown_nav_templates():
             templates.append(p['nav_dropdown'])
     return templates
 
+@register.simple_tag
+def plugin_main_nav_templates():
+    templates = []
+    for p in PLUGINS:
+        if p['nav_main']:
+            templates.append(p['nav_main'])
+    return templates
+
 
 @register.simple_tag
 def bookmarklet(request):