diff --git a/backend/src/utils/landmarks_manager.py b/backend/src/utils/landmarks_manager.py
index 67fb086..5f5e82e 100644
--- a/backend/src/utils/landmarks_manager.py
+++ b/backend/src/utils/landmarks_manager.py
@@ -291,6 +291,7 @@ class LandmarkManager:
                 n_tags = len(elem.tags().keys())    # Add number of tags
                 score = n_tags**self.tag_exponent   # Add score
 
+
                 # remove specific tags
                 skip = False
                 for tag in elem.tags().keys():
@@ -336,6 +337,14 @@ class LandmarkManager:
                 score = score_function(score)
                 if "place_of_worship" in elem.tags().values() :
                     score = int(score*self.church_coeff)
+                    duration = 20
+                
+                elif "museum" in elem.tags().values() :
+                    score = int(score*self.church_coeff)
+                    duration = 60
+                
+                else : 
+                    duration = 30
 
                 # Generate the landmark and append it to the list
                 landmark = Landmark(
@@ -346,7 +355,8 @@ class LandmarkManager:
                     osm_id=osm_id,
                     attractiveness=score,
                     must_do=False,
-                    n_tags=int(n_tags)
+                    n_tags=int(n_tags),
+                    duration = duration
                 )
                 return_list.append(landmark)
         
diff --git a/backend/src/utils/optimizer.py b/backend/src/utils/optimizer.py
index 947c0dc..b20412e 100644
--- a/backend/src/utils/optimizer.py
+++ b/backend/src/utils/optimizer.py
@@ -191,7 +191,7 @@ class Optimizer:
             dist_table = [0]*len(landmarks)
             c.append(-spot1.attractiveness)
             for j, spot2 in enumerate(landmarks) :
-                t = get_time(spot1.location, spot2.location)
+                t = get_time(spot1.location, spot2.location) + spot1.duration
                 dist_table[j] = t
             closest = sorted(dist_table)[:22]
             for i, dist in enumerate(dist_table) :