diff --git a/app/assets/stylesheets/application.css b/app/assets/stylesheets/application.css
index 01f992a..a388563 100644
--- a/app/assets/stylesheets/application.css
+++ b/app/assets/stylesheets/application.css
@@ -14,6 +14,9 @@
  *= require_self
  */
 
+body {
+  font-family: Garamond, Georgia, serif;
+}
 
  .breadcrumb {
   font-size: 2em;
@@ -35,4 +38,15 @@
 
 .aka abbr {
   font-size: 0.8em;
+}
+
+.identifier {
+  color: grey;
+  font-size: 0.5em;
+  vertical-align: top;
+}
+
+.identifier a {
+  margin: 0 3px;
+  vertical-align: inherit;
 }
\ No newline at end of file
diff --git a/app/controllers/subjects_controller.rb b/app/controllers/subjects_controller.rb
new file mode 100644
index 0000000..0070d85
--- /dev/null
+++ b/app/controllers/subjects_controller.rb
@@ -0,0 +1,32 @@
+class SubjectsController < ApplicationController
+
+
+  def show
+    @subject = Subject.find_by(scheme: 'mesh', identifier: params[:id])
+
+    @trees = []
+
+    @subject.tree_numbers.each do |tree_number|
+
+      parent_tree_numbers = [tree_number]
+
+      while !tree_number.blank?
+
+        tree_number = tree_number.gsub(/\.?[^\/\.]+\z/, '')
+        parent_tree_numbers << tree_number unless tree_number.blank?
+
+      end
+
+      @trees << Subject.select('*')
+      .from("(select *, unnest(tree_numbers) as tree_number from subjects) as subjects")
+      .where(tree_number: parent_tree_numbers)
+      .order(:tree_number)
+
+    end
+
+    @records = @subject.records.select(:identifier, :title).limit(50)
+
+  end
+
+
+end
diff --git a/app/models/subject.rb b/app/models/subject.rb
index 6c08052..91441aa 100644
--- a/app/models/subject.rb
+++ b/app/models/subject.rb
@@ -5,4 +5,18 @@ def records
     Record.where("metadata->'650' @> '[{\"0\" : \"#{identifier}\"}]'::jsonb")
   end
 
+  def related_subjects
+
+    @related_subjects ||= begin
+
+      if related_identifiers.length > 0
+        Subject.where(identifier: related_identifiers)
+      else
+        []
+      end
+
+    end
+
+  end
+
 end
diff --git a/app/views/shared/_records.html.erb b/app/views/shared/_records.html.erb
new file mode 100644
index 0000000..da6538c
--- /dev/null
+++ b/app/views/shared/_records.html.erb
@@ -0,0 +1,16 @@
+<% if records.length > 0 %>
+
+  <% if records.length == 50 %>
+   <h2>50+ Wellcome Library records</h2>
+  <% else %>
+    <h2><%= pluralize(@records.length, 'Wellcome Library record') %></h2>
+  <% end %>
+
+  <ul>
+    <% records.each do |record| %>
+      <li><%= link_to record.title, record %></li>
+    <% end %>
+  </ul>
+<% else %>
+  <p>There’s nothing in the Wellcome Library collection about this (yet).</p>
+<% end %>
\ No newline at end of file
diff --git a/app/views/shared/_related_subjects.html.erb b/app/views/shared/_related_subjects.html.erb
new file mode 100644
index 0000000..4bd2695
--- /dev/null
+++ b/app/views/shared/_related_subjects.html.erb
@@ -0,0 +1,6 @@
+<% if related_subjects.length > 0 %>
+  <p>Related:
+    <%= related_subjects.collect do |subject| %>
+      <% link_to(subject.label, subject_path(subject.identifier)) %>
+    <% end.join(', ').html_safe %>
+<% end %>
\ No newline at end of file
diff --git a/app/views/subjects/show.html.erb b/app/views/subjects/show.html.erb
new file mode 100644
index 0000000..7df7d0a
--- /dev/null
+++ b/app/views/subjects/show.html.erb
@@ -0,0 +1,26 @@
+<% @trees.each do |tree| %>
+
+  <p>
+    <%= link_to 'Top', '/tree' %> /
+    <%= tree.collect do |subject| %>
+      <% link_to subject.label, "/tree/#{subject.tree_number.gsub('.', '/')}" %>
+    <% end.join(" / ").html_safe %>
+  </p>
+
+<% end %>
+
+<h1><%= @subject.label %></h1>
+
+<% if @subject.all_labels.length > 1 %>
+  <p>Also known as: <%= (@subject.all_labels - [@subject.label]).collect {|s| content_tag('b', s)}.join(', ').html_safe %>.</p>
+<% end %>
+
+<%= render 'shared/related_subjects', related_subjects: @subject.related_subjects %>
+
+<p class="description">
+  <%= @subject.description %>
+</p>
+
+
+
+<%= render 'shared/records', records: @records %>
\ No newline at end of file
diff --git a/app/views/tree/show.html.erb b/app/views/tree/show.html.erb
index a38ddd0..e1c122a 100644
--- a/app/views/tree/show.html.erb
+++ b/app/views/tree/show.html.erb
@@ -4,12 +4,16 @@
 
   <%= @parent_subjects.collect {|s| link_to(s.label, "/tree/#{s.tree_number.gsub('.', '/')}") + ' /' }.join(' ').html_safe %>
   <h1><%= @subject.label %></h1>
+  <span class="identifier">(<%= link_to @subject.identifier, subject_path(@subject.identifier) %>)</span>
 </div>
 
 <% if @subject.all_labels.length > 1 %>
   <p>Also known as: <%= (@subject.all_labels - [@subject.label]).collect {|s| content_tag('b', s)}.join(', ').html_safe %>.</p>
 <% end %>
 
+<%= render 'shared/related_subjects', related_subjects: @subject.related_subjects %>
+
+
 <p class="description">
   <%= @subject.description %>
 </p>
@@ -19,19 +23,4 @@
   <%= render 'tree', subjects: @child_subjects %>
 <% end %>
 
-<% if @records.length > 0 %>
-
-  <% if @records.length == 50 %>
-   <h2>50+ Wellcome Library records</h2>
-  <% else %>
-    <h2><%= pluralize(@records.length, 'Wellcome Library record') %></h2>
-  <% end %>
-
-  <ul>
-    <% @records.each do |record| %>
-      <li><%= link_to record.title, record %></li>
-    <% end %>
-  </ul>
-<% else %>
-  <p>There’s nothing in the Wellcome Library collectiona about this (yet).</p>
-<% end %>
\ No newline at end of file
+<%= render 'shared/records', records: @records %>
\ No newline at end of file
diff --git a/config/routes.rb b/config/routes.rb
index 07f23c9..255ee9a 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -4,6 +4,8 @@
 
   resources :tree, only: [:index, :show], constraints: {id: /[^\.]+/}
 
+  resources :subjects, only: :show, path: ''
+
   root 'home#show'
 
 end