diff --git a/tests/test_geometry_factory.py b/tests/test_geometry_factory.py
index 3e810831..75f5f8be 100644
--- a/tests/test_geometry_factory.py
+++ b/tests/test_geometry_factory.py
@@ -4,6 +4,7 @@ SPDX - License - Identifier: LGPL - 3.0 - or -later
 Copyright © 2020 Project Author Guille Gutierrez guillermo.gutierrezmorote@concordia.ca
 """
 import os
+import pickle
 from pathlib import Path
 from unittest import TestCase
 
@@ -21,6 +22,7 @@ class TestGeometryFactory(TestCase):
     """
     self._city_gml = None
     self._example_path = (Path(__file__).parent.parent / 'tests_data').resolve()
+    self._pickle_file = (self._example_path / 'city.pickle').resolve()
 
   def _get_citygml(self):
     if self._city_gml is None:
@@ -54,6 +56,33 @@ class TestGeometryFactory(TestCase):
     self.assertIsNotNone(city.name, 'name is none')
     self.assertIsNotNone(city.country_code, 'country code is none')
 
+  def test_city_serialize(self):
+    city = self._get_citygml()
+    self.assertIsNotNone(city.city_objects, 'city_objects is none')
+    for building in city.buildings:
+      self.assertIsNotNone(city.city_object(building.name), 'city_object return none')
+    self.assertIsNotNone(city.srs_name, 'srs_name is none')
+    self.assertIsNotNone(city.lower_corner, 'lower_corner is none')
+    self.assertIsNotNone(city.upper_corner, 'upper_corner is none')
+    self.assertIsNotNone(city.name, 'name is none')
+    self.assertIsNotNone(city.country_code, 'country code is none')
+
+    with open(self._pickle_file, 'wb') as f:
+      pickle.dump(city, f)
+
+  def test_city_deserialize(self):
+    with open(self._pickle_file, 'rb') as f:
+      city = pickle.load(f)
+    print(f'city with {len(city.buildings)} buildings')
+    for building in city.buildings:
+      self.assertIsNotNone(city.city_object(building.name), 'city_object return none')
+      print(building.name)
+    self.assertIsNotNone(city.srs_name, 'srs_name is none')
+    self.assertIsNotNone(city.lower_corner, 'lower_corner is none')
+    self.assertIsNotNone(city.upper_corner, 'upper_corner is none')
+    self.assertIsNotNone(city.name, 'name is none')
+    self.assertIsNotNone(city.country_code, 'country code is none')
+
   def test_citygml_buildings(self):
     """
     Test city objects in the city