diff --git a/map_machine/doc/collections.py b/map_machine/doc/collections.py
index d7100c4..2f46482 100644
--- a/map_machine/doc/collections.py
+++ b/map_machine/doc/collections.py
@@ -92,4 +92,33 @@ collections = [
         "Tag:tower:type=diving",
         {"man_made": "tower", "tower:type": "diving"},
     ),
+    Collection(
+        "Key:design",
+        {},
+        "power",
+        ["tower", "pole"],
+        "design",
+        [
+            "one-level",
+            "two-level",
+            "three-level",
+            "four-level",
+            "donau",
+            "donau_inverse",
+            "barrel",
+            "asymmetric",
+            "triangle",
+            "flag",
+            "delta",
+            "delta_two-level",
+            "delta_three-level",
+            "y-frame",
+            "x-frame",
+            "h-frame",
+            "guyed_h-frame",
+            "portal",
+            "portal_two-level",
+            "portal_three-level",
+        ],
+    ),
 ]