diff --git a/index.json b/index.json
index 60206a8f9..b3db8b270 100644
--- a/index.json
+++ b/index.json
@@ -250,6 +250,19 @@
         },
         {
             "id": "places_geo"
+        },
+        {
+            "name": {
+                "en": "Special",
+                "de": "Spezial"
+            },
+            "id": "special",
+            "type": "index",
+            "subCategories": [
+                {
+                    "id": "wikipedia"
+                }
+            ]
         }
     ]
 }
diff --git a/wikipedia.json b/wikipedia.json
new file mode 100644
index 000000000..5e9db8303
--- /dev/null
+++ b/wikipedia.json
@@ -0,0 +1,14 @@
+{
+    "type": "overpass",
+    "name": {
+        "en": "Wikipedia"
+    },
+    "query": {
+        "14": "(\nnode[~\"wikipedia\"~\".\"];\nway[~\"wikipedia\"~\".\"];\nrelation[~\"wikipedia\"~\".\"];\n)"
+    },
+    "feature": {
+        "pre": "{% set errors = [] %}\n{% for k, v in tags %}\n\n{% if k|matches(\"^wikipedia:\") %}\n  {% set errors = errors|merge([\"Uses <tt>wikipedia</tt> and old-style <tt>\" ~ k ~ \"</tt> tag\"]) %}\n{% elseif k|matches(\"^wikipedia:\") %}\n  {% set errors = errors|merge([\"Uses old-style <tt>\" ~ k ~ \"</tt> tag\"]) %}\n{% endif %}\n\n{% if k|matches(\":?wikipedia$\") and not v|matches(\"^[a-z-]+:\") %}\n  {% set errors = errors|merge([\"Tag <tt>\" ~ k ~ \"</tt> does not contain language information: \" ~ v ]) %}\n{% endif %}\n\n{% endfor %}",
+        "description": "{% if errors|length %}\n{{ errors|length }} {{ trans('error', errors|length) }}\n{% endif %}",
+        "body": "{% if errors|length %}\n{{ trans('error', errors|length) }}:<ul>\n{% for e in errors %}\n  <li>{{ e|raw }}</li>\n{% endfor %}\n</ul>\n{% endif %}"
+    }
+}