--- a/globalneighbors/web.py	Sun Jun 25 16:28:56 2017 -0700
+++ b/globalneighbors/web.py	Sun Jun 25 17:45:19 2017 -0700
@@ -108,6 +108,19 @@
                         body=json.dumps(self.cities(
                             startswith=request.GET.get('term'))))
 
+class NeighborsHandler(Handler):
+
+    content_type = 'application/json'
+
+    def __init__(self, neighbors):
+        self.neighbors = neighbors
+
+    def GET(self, request):
+        geoid = request.GET.get('geoid')
+        neighbors = self.neighbors.get(geoid, [])
+        return Response(content_type=self.content_type,
+                        body=json.dumps(neighbors))
+
 
 class GlobalHandler(Handler):
     """WSGI HTTP Handler"""
@@ -126,7 +139,9 @@
                                      fields=fields)
         self.locations = locations(self.cities)
         if neighbors_file:
-            pass  # TODO
+            self.neighbors = read_neighbors_file(neighbors_file)
+        else:
+            self.neighbors = None
 
         # get country codes
         self.country_codes = sorted(set([city['country code']
@@ -166,6 +181,8 @@
                 if not city:
                     return
                 variables = dict(city=city)
+                if self.neighbors:
+                    import pdb; pdb.set_trace()
                 return Response(content_type=self.content_type,
                                 body=self.citypage.render(variables))
             except ValueError: