diff --git a/decidim-accountability/lib/decidim/accountability/admin_engine.rb b/decidim-accountability/lib/decidim/accountability/admin_engine.rb
index 8b6846c7b2447..c1697650316db 100644
--- a/decidim-accountability/lib/decidim/accountability/admin_engine.rb
+++ b/decidim-accountability/lib/decidim/accountability/admin_engine.rb
@@ -16,8 +16,8 @@ class AdminEngine < ::Rails::Engine
         resources :results, except: [:show] do
           get :proposals_picker, on: :collection
 
-          resources :attachment_collections
-          resources :attachments
+          resources :attachment_collections, except: [:show]
+          resources :attachments, except: [:show]
           resources :timeline_entries, except: [:show]
         end
         resources :projects_import, only: [:new, :create]
diff --git a/decidim-admin/app/controllers/decidim/admin/categories_controller.rb b/decidim-admin/app/controllers/decidim/admin/categories_controller.rb
index ba68353a43cf5..1c7324efcf2d5 100644
--- a/decidim-admin/app/controllers/decidim/admin/categories_controller.rb
+++ b/decidim-admin/app/controllers/decidim/admin/categories_controller.rb
@@ -58,11 +58,6 @@ def update
         end
       end
 
-      def show
-        @category = collection.find(params[:id])
-        enforce_permission_to :read, :category, category: @category
-      end
-
       def destroy
         @category = collection.find(params[:id])
         enforce_permission_to :destroy, :category, category: @category
diff --git a/decidim-admin/app/controllers/decidim/admin/concerns/has_attachment_collections.rb b/decidim-admin/app/controllers/decidim/admin/concerns/has_attachment_collections.rb
index e74a7571bc5fd..4963f36b30a7e 100644
--- a/decidim-admin/app/controllers/decidim/admin/concerns/has_attachment_collections.rb
+++ b/decidim-admin/app/controllers/decidim/admin/concerns/has_attachment_collections.rb
@@ -69,12 +69,6 @@ def update
             end
           end
 
-          def show
-            @attachment_collection = collection.find(params[:id])
-            enforce_permission_to :read, :attachment_collection, attachment_collection: @attachment_collection
-            render template: "decidim/admin/attachment_collections/show"
-          end
-
           def destroy
             @attachment_collection = collection.find(params[:id])
             enforce_permission_to :destroy, :attachment_collection, attachment_collection: @attachment_collection
diff --git a/decidim-admin/app/controllers/decidim/admin/concerns/has_attachments.rb b/decidim-admin/app/controllers/decidim/admin/concerns/has_attachments.rb
index 01bf879b0ba18..29dc1a4660401 100644
--- a/decidim-admin/app/controllers/decidim/admin/concerns/has_attachments.rb
+++ b/decidim-admin/app/controllers/decidim/admin/concerns/has_attachments.rb
@@ -69,12 +69,6 @@ def update
             end
           end
 
-          def show
-            @attachment = collection.find(params[:id])
-            enforce_permission_to(:read, :attachment, attachment:)
-            render template: "decidim/admin/attachments/show"
-          end
-
           def destroy
             @attachment = collection.find(params[:id])
             enforce_permission_to(:destroy, :attachment, attachment:)
diff --git a/decidim-admin/app/views/decidim/admin/attachment_collections/show.html.erb b/decidim-admin/app/views/decidim/admin/attachment_collections/show.html.erb
deleted file mode 100644
index d234d081f7317..0000000000000
--- a/decidim-admin/app/views/decidim/admin/attachment_collections/show.html.erb
+++ /dev/null
@@ -1,13 +0,0 @@
-<h3><%= translated_attribute(@attachment_collection.name) %></h3>
-
-<div class="actions">
-  <hr>
-  <%= link_to t("decidim.admin.actions.edit"), ["edit", @attachment_collection.collection_for, @attachment_collection], class: "button" if allowed_to? :update, :attachment_collection, attachment_collection: @attachment_collection %>
-  <%= link_to t("decidim.admin.actions.destroy"), [@attachment_collection.collection_for, @attachment_collection], method: :delete, class: "alert button", data: { confirm: t("decidim.admin.actions.confirm_destroy") } if allowed_to? :destroy, :attachment_collection, attachment_collection: @attachment_collection %>
-</div>
-
-<dl>
-  <%= display_for @attachment_collection,
-    :name,
-    :description %>
-</dl>
diff --git a/decidim-admin/app/views/decidim/admin/attachments/show.html.erb b/decidim-admin/app/views/decidim/admin/attachments/show.html.erb
deleted file mode 100644
index 8af67fa8a9b18..0000000000000
--- a/decidim-admin/app/views/decidim/admin/attachments/show.html.erb
+++ /dev/null
@@ -1,24 +0,0 @@
-<h3><%= translated_attribute(@attachment.title) %></h3>
-
-<div class="actions">
-  <hr>
-  <%= link_to t("decidim.admin.actions.edit"), ["edit", @attachment.attached_to, @attachment] if allowed_to? :update, :attachment, attachment: @attachment %>
-  <%= link_to t("decidim.admin.actions.destroy"), [@attachment.attached_to, @attachment], method: :delete, class: "alert button", data: { confirm: t("decidim.admin.actions.confirm_destroy") } if allowed_to? :destroy, :attachment, attachment: @attachment %>
-</div>
-
-<dl>
-  <%= display_for @attachment,
-    :title,
-    :description,
-    :file_type %>
-  <dt><%= display_label(@attachment, :file_size) %></dt>
-  <dd><%= number_to_human_size(@attachment.file_size) %></dd>
-  <dt><%= display_label(@attachment, :file) %></dt>
-  <% if @attachment.photo? %>
-    <%= link_to @attachment.big_url do %>
-      <%= image_tag @attachment.thumbnail_url, class: "thumbnail", alt: strip_tags(translated_attribute(@attachment.description)) %>
-    <% end %>
-  <% else %>
-    <%= link_to translated_attribute(@attachment.title), @attachment.url %>
-  <% end %>
-</dl>
diff --git a/decidim-admin/app/views/decidim/admin/categories/show.html.erb b/decidim-admin/app/views/decidim/admin/categories/show.html.erb
deleted file mode 100644
index a1d97207dd96a..0000000000000
--- a/decidim-admin/app/views/decidim/admin/categories/show.html.erb
+++ /dev/null
@@ -1,12 +0,0 @@
-<h3><%= translated_attribute(@category.name) %></h3>
-
-<div class="actions">
-  <hr>
-  <%= link_to t("decidim.admin.actions.edit"), ["edit", participatory_space, @category] if allowed_to? :update, :category, category: @category %>
-  <%= link_to t("decidim.admin.actions.destroy"), [participatory_space, @category], method: :delete, class: "alert button", data: { confirm: t("decidim.admin.actions.confirm_destroy") } if allowed_to? :destroy, :category, category: @category %>
-</div>
-
-<dl>
-  <%= display_for @category,
-    :name %>
-</dl>
diff --git a/decidim-assemblies/lib/decidim/assemblies/admin_engine.rb b/decidim-assemblies/lib/decidim/assemblies/admin_engine.rb
index 15fd29677b43b..fb67beb6eeff3 100644
--- a/decidim-assemblies/lib/decidim/assemblies/admin_engine.rb
+++ b/decidim-assemblies/lib/decidim/assemblies/admin_engine.rb
@@ -29,8 +29,8 @@ class AdminEngine < ::Rails::Engine
             end
           end
 
-          resources :attachment_collections, controller: "assembly_attachment_collections"
-          resources :attachments, controller: "assembly_attachments"
+          resources :attachment_collections, controller: "assembly_attachment_collections", except: [:show]
+          resources :attachments, controller: "assembly_attachments", except: [:show]
 
           resource :export, controller: "assembly_exports", only: :create
 
@@ -44,7 +44,7 @@ class AdminEngine < ::Rails::Engine
         end
 
         scope "/assemblies/:assembly_slug" do
-          resources :categories
+          resources :categories, except: [:show]
 
           resources :components do
             resource :permissions, controller: "component_permissions"
diff --git a/decidim-blogs/lib/decidim/blogs/admin_engine.rb b/decidim-blogs/lib/decidim/blogs/admin_engine.rb
index 5b8bc0602e35b..3b8434ab75c41 100644
--- a/decidim-blogs/lib/decidim/blogs/admin_engine.rb
+++ b/decidim-blogs/lib/decidim/blogs/admin_engine.rb
@@ -12,8 +12,8 @@ class AdminEngine < ::Rails::Engine
 
       routes do
         resources :posts do
-          resources :attachment_collections
-          resources :attachments
+          resources :attachment_collections, except: [:show]
+          resources :attachments, except: [:show]
         end
         root to: "posts#index"
       end
diff --git a/decidim-budgets/lib/decidim/budgets/admin_engine.rb b/decidim-budgets/lib/decidim/budgets/admin_engine.rb
index a70f72259e42e..41384d5c9487d 100644
--- a/decidim-budgets/lib/decidim/budgets/admin_engine.rb
+++ b/decidim-budgets/lib/decidim/budgets/admin_engine.rb
@@ -26,8 +26,8 @@ class AdminEngine < ::Rails::Engine
         resources :projects, exclude: [:index, :new, :create, :edit, :update, :destroy] do
           get :proposals_picker, on: :collection
 
-          resources :attachment_collections
-          resources :attachments
+          resources :attachment_collections, except: [:show]
+          resources :attachments, except: [:show]
         end
 
         root to: "budgets#index"
diff --git a/decidim-conferences/lib/decidim/conferences/admin_engine.rb b/decidim-conferences/lib/decidim/conferences/admin_engine.rb
index 5c7014422ddf1..a677382cade2e 100644
--- a/decidim-conferences/lib/decidim/conferences/admin_engine.rb
+++ b/decidim-conferences/lib/decidim/conferences/admin_engine.rb
@@ -46,12 +46,12 @@ class AdminEngine < ::Rails::Engine
             end
           end
 
-          resources :attachment_collections, controller: "conference_attachment_collections"
-          resources :attachments, controller: "conference_attachments"
+          resources :attachment_collections, controller: "conference_attachment_collections", except: [:show]
+          resources :attachments, controller: "conference_attachments", except: [:show]
         end
 
         scope "/conferences/:conference_slug" do
-          resources :categories
+          resources :categories, except: [:show]
 
           resources :components do
             resource :permissions, controller: "component_permissions"
diff --git a/decidim-elections/lib/decidim/votings/admin_engine.rb b/decidim-elections/lib/decidim/votings/admin_engine.rb
index 00ee34757ebc5..1b60bc91fe4e6 100644
--- a/decidim-elections/lib/decidim/votings/admin_engine.rb
+++ b/decidim-elections/lib/decidim/votings/admin_engine.rb
@@ -30,8 +30,8 @@ class AdminEngine < ::Rails::Engine
           end
           resources :monitoring_committee_verify_elections, only: [:index]
           resources :monitoring_committee_election_results, only: [:index, :show, :update]
-          resources :attachments, controller: "voting_attachments"
-          resources :attachment_collections, controller: "voting_attachment_collections"
+          resources :attachments, controller: "voting_attachments", except: [:show]
+          resources :attachment_collections, controller: "voting_attachment_collections", except: [:show]
           resources :ballot_styles
 
           resource :census, only: [:show, :destroy, :create], controller: "/decidim/votings/census/admin/census" do
diff --git a/decidim-initiatives/lib/decidim/initiatives/admin_engine.rb b/decidim-initiatives/lib/decidim/initiatives/admin_engine.rb
index e2bca0481a844..567c874400640 100644
--- a/decidim-initiatives/lib/decidim/initiatives/admin_engine.rb
+++ b/decidim-initiatives/lib/decidim/initiatives/admin_engine.rb
@@ -37,7 +37,7 @@ class AdminEngine < ::Rails::Engine
             get :export
           end
 
-          resources :attachments, controller: "initiative_attachments"
+          resources :attachments, controller: "initiative_attachments", except: [:show]
 
           resources :committee_requests, only: [:index] do
             member do
diff --git a/decidim-meetings/lib/decidim/meetings/admin_engine.rb b/decidim-meetings/lib/decidim/meetings/admin_engine.rb
index f76a7ee833c4d..bacdd588ac897 100644
--- a/decidim-meetings/lib/decidim/meetings/admin_engine.rb
+++ b/decidim-meetings/lib/decidim/meetings/admin_engine.rb
@@ -31,8 +31,8 @@ class AdminEngine < ::Rails::Engine
             end
           end
           resources :agenda, except: [:index, :destroy]
-          resources :attachment_collections
-          resources :attachments
+          resources :attachment_collections, except: [:show]
+          resources :attachments, except: [:show]
           resources :copies, controller: "meeting_copies", only: [:new, :create]
           resource :poll, only: [:edit, :update], controller: "meetings_poll"
         end
diff --git a/decidim-participatory_processes/lib/decidim/participatory_processes/admin_engine.rb b/decidim-participatory_processes/lib/decidim/participatory_processes/admin_engine.rb
index b84d6b8134afd..f125d5a8c5d5c 100644
--- a/decidim-participatory_processes/lib/decidim/participatory_processes/admin_engine.rb
+++ b/decidim-participatory_processes/lib/decidim/participatory_processes/admin_engine.rb
@@ -36,8 +36,8 @@ class AdminEngine < ::Rails::Engine
               post :resend_invitation, to: "participatory_process_user_roles#resend_invitation"
             end
           end
-          resources :attachment_collections, controller: "participatory_process_attachment_collections"
-          resources :attachments, controller: "participatory_process_attachments"
+          resources :attachment_collections, controller: "participatory_process_attachment_collections", except: [:show]
+          resources :attachments, controller: "participatory_process_attachments", except: [:show]
 
           resource :export, controller: "participatory_process_exports", only: :create
 
@@ -50,7 +50,7 @@ class AdminEngine < ::Rails::Engine
         end
 
         scope "/participatory_processes/:participatory_process_slug" do
-          resources :categories
+          resources :categories, except: [:show]
 
           resources :components do
             resource :permissions, controller: "component_permissions"