diff --git a/resources/public/img/map-pins/unknown-pin.png b/resources/public/img/map-pins/unknown-pin.png
new file mode 100644
index 0000000..f0b8fbb
Binary files /dev/null and b/resources/public/img/map-pins/unknown-pin.png differ
diff --git a/resources/public/img/map-pins/unknown-pin.xcf b/resources/public/img/map-pins/unknown-pin.xcf
new file mode 100644
index 0000000..b55b9f8
Binary files /dev/null and b/resources/public/img/map-pins/unknown-pin.xcf differ
diff --git a/src/cljs/youyesyet/core.cljs b/src/cljs/youyesyet/core.cljs
index 69f23aa..0b4cae8 100644
--- a/src/cljs/youyesyet/core.cljs
+++ b/src/cljs/youyesyet/core.cljs
@@ -95,6 +95,9 @@
 (secretary/defroute "/electors" []
   (rf/dispatch [:set-active-page :electors]))
 
+(secretary/defroute "/electors/:address" {address-id :address}
+  (rf/dispatch [:set-address address-id]))
+
 (secretary/defroute "/followup" []
   (rf/dispatch [:set-active-page :followup]))
 
diff --git a/src/cljs/youyesyet/db.cljs b/src/cljs/youyesyet/db.cljs
index 754ec45..2d1efaf 100644
--- a/src/cljs/youyesyet/db.cljs
+++ b/src/cljs/youyesyet/db.cljs
@@ -31,18 +31,27 @@
 
 (def default-db
   {;;; the currently selected address, if any.
-    :address {:id 1 :address "13 Imaginary Terrace, IM1 3TE" :latitude 55.8253043 :longitude -4.2590944
+    :address {:id 1 :address "13 Imaginary Terrace, IM1 3TE" :latitude 55.8253043 :longitude -4.2569057
               :electors [{:id 1 :name "Alan Anderson" :gender :male :intention :no}
                          {:id 2 :name "Ann Anderson" :gender :female}
                          {:id 3 :name "Alex Anderson" :gender :fluid :intention :yes}
                          {:id 4 :name "Andy Anderson" :intention :yes}]}
     ;;; a list of the addresses in the current location at which there
     ;;; are electors registered.
-    :addresses [{:id 1 :address "13 Imaginary Terrace, IM1 3TE" :latitude 55.8253043 :longitude -4.2590944
+    :addresses [{:id 1 :address "13 Imaginary Terrace, IM1 3TE" :latitude 55.8253043 :longitude -4.2570944
                  :electors [{:id 1 :name "Alan Anderson" :gender :male :intention :no}
                             {:id 2 :name "Ann Anderson" :gender :female}
                             {:id 3 :name "Alex Anderson" :gender :fluid :intention :yes}
-                            {:id 4 :name "Andy Anderson" :intention :yes}]}]
+                            {:id 4 :name "Andy Anderson" :intention :yes}]}
+                {:id 2 :address "15 Imaginary Terrace, IM1 3TE" :latitude 55.8252354 :longitude -4.2572778
+                 :electors [{:id 1 :name "Beryl Brown" :gender :female}
+                            {:id 2 :name "Betty Black" :gender :female}]}
+                {:id 3 :address "17 Imaginary Terrace, IM1 3TE" :latitude 55.825166 :longitude -4.257026
+                 :electors [{:id 1 :name "Catriona Crathie" :gender :female :intention :yes}
+                            {:id 2 :name "Colin Caruthers" :gender :male :intention :yes}
+                            {:id 3 :name "Calum Crathie" :intention :yes}]}
+                {:id 4 :address "19 Imaginary Terrace, IM1 3TE" :latitude 55.82506950000001 :longitude -4.2570239
+                 :electors [{:id 1 :name "David Dewar" :gender :male :intention :no}]}]
     ;;; electors at the currently selected address
     :electors [{:id 1 :name "Alan Anderson" :gender :male :intention :no}
                {:id 2 :name "Ann Anderson" :gender :female}
diff --git a/src/cljs/youyesyet/views/map.cljs b/src/cljs/youyesyet/views/map.cljs
index 4f63e9d..01bae13 100644
--- a/src/cljs/youyesyet/views/map.cljs
+++ b/src/cljs/youyesyet/views/map.cljs
@@ -62,10 +62,17 @@
       "mixed-pin")))
 
 
-(defn click-handler
+(defn map-pin-click-handler
+  "On clicking on the pin, navigate to the electors at the address.
+  This way of doing it adds an antry in the browser location history,
+  so back links work."
   [id]
   (js/console.log (str "Click handler for address #" id))
-  (dispatch [:set-address id]))
+  (set! window.location.href (str "#electors/" id)))
+;; This way is probably more idiomatic React, but back links don't work:
+;; (defn map-pin-click-handler
+;;  [id]
+;;  (dispatch [:set-address id]))
 
 
 (defn add-map-pin
@@ -83,9 +90,10 @@
                      :shadowAnchor [16 23]}))
         marker (.marker js/L
                         (.latLng js/L lat lng)
-                        (clj->js {:icon pin :title (:address address)}))
+                        (clj->js {:icon pin
+                                  :title (:address address)}))
         ]
-    (.on marker "click" #(fn [] (click-handler (:id address))))
+    (.on marker "click" (fn [_] (map-pin-click-handler (str (:id address)))))
     (.addTo marker view)))