diff --git a/templates/isa.html b/templates/isa.html
new file mode 100644
index 0000000..758ce76
--- /dev/null
+++ b/templates/isa.html
@@ -0,0 +1,87 @@
+{% extends "base.html" %}
+
+{% block title %}{{ item.label() }} ({{ item.qid }}) {% endblock %}
+
+{% block content %}
+<div class="container my-2">
+
+  <h1>{{ self.title() }}</h1>
+
+  <div><a href="https://www.wikidata.org/wiki/{{ item.qid }}">
+      view on Wikidata
+      <i class="fa fa-external-link"></i>
+  </a></div>
+
+  <div class="my-2">
+  <form method="POST">
+    <input type="hidden" name="action" value="refresh">
+    <input type="submit" value="refresh item" class="btn btn-sm btn-primary">
+  </form>
+  </div>
+
+  {% set description = item.description() %}
+  {% set aliases = item.get_aliases() %}
+  {% set osm_tag_list = item.get_claim("P1282") %}
+
+  <div class="my-3">
+  {% if description %}
+    <strong>description</strong>:
+    {{ description }}<br>
+  {% endif %}
+
+  {% if aliases %}
+    <strong>aliases</strong>:
+    {{ aliases | join("; ") }}
+  {% endif %}
+  </div>
+
+  <h4>subclass of</h4>
+  <div class="mb-3">
+  {% if subclass_list %}
+    {% for subclass in subclass_list %}
+      <a href="{{ subclass.isa_page_url }}">{{ subclass.label }}</a>
+      ({{ subclass.qid }})
+      &ndash; {{ subclass.description }}
+      <br>
+    {% endfor %}
+  {% else %}
+    <p>no subclasses</p>
+  {% endif %}
+  </div>
+
+  <h4>OpenStreetMap tags/keys from Wikidata</h4>
+  {% if osm_tag_list %}
+    <ul>
+    {% for tag_or_key in osm_tag_list %}
+      <li>{{ tag_or_key }}</li>
+    {% endfor %}
+    </ul>
+  {% else %}
+    <p>no tags/keys from Wikidata</p>
+  {% endif %}
+
+  <h4>extra OpenStreetMap tags/keys</h4>
+
+  {% if extra %}
+    <ul>
+      {% for tag_or_key in extra %}
+        <li>{{ tag_or_key }} <a href="#">🗙 remove</a></li>
+      {% endfor %}
+    </ul>
+  {% else %}
+    <p>no extra tags/keys</p>
+  {% endif %}
+
+  <form method="POST" class="row row-cols-lg-auto g-3 align-items-center">
+    <div class="col-12">
+      <div class="input-group">
+        <input class="form-control" id="tag-or-key" name="tag_or_key" placeholder="tag or key">
+      </div>
+    </div>
+    <div class="col-12">
+      <button type="submit" class="btn btn-primary">add</button>
+    </div>
+  </form>
+
+</div>
+{% endblock %}
diff --git a/web_view.py b/web_view.py
index a47335b..d7a3192 100755
--- a/web_view.py
+++ b/web_view.py
@@ -128,6 +128,44 @@ def redirect_from_root():
 def index_page():
     return render_template("index.html")
 
+
+def get_username():
+    user = flask_login.current_user
+    if user.is_authenticated:
+        return user.username
+
+
+@app.route("/isa/Q<int:item_id>", methods=["GET", "POST"])
+def isa_page(item_id):
+    item = api.get_item(item_id)
+
+    if request.method == "POST":
+        return redirect(url_for(request.endpoint, item_id=item_id))
+
+    q = model.ItemExtraKeys.query.filter_by(item=item)
+    extra = [e.tag_or_key for e in q]
+    subclass_property = "P279"
+
+    subclass_list = []
+    for s in item.get_claim(subclass_property):
+        subclass = api.get_item(s["numeric-id"])
+        subclass_list.append({
+            "qid": s["id"],
+            "item_id": s["numeric-id"],
+            "label": subclass.label(),
+            "description": subclass.description(),
+            "isa_page_url": url_for("isa_page", item_id=s["numeric-id"]),
+        })
+
+    return render_template(
+        "isa.html",
+        item=item,
+        extra=extra,
+        subclass_list=subclass_list,
+        username=get_username()
+    )
+
+
 @app.route("/admin/skip_isa")
 def admin_skip_isa_list():
     q = model.Item.query.join(model.SkipIsA).order_by(model.Item.item_id)
@@ -254,8 +292,8 @@ def map_location(zoom, lat, lon):
         zoom=zoom,
         lat=lat,
         lon=lon,
-        radius=request.args.get('radius'),
-        username=username,
+        radius=request.args.get("radius"),
+        username=get_username(),
         mode="map",
         q=None,
     )