reverted:
--- b/core/modules/system/src/Tests/Cache/PageCacheTagsIntegrationTest.php
+++ a/core/modules/system/src/Tests/Cache/PageCacheTagsIntegrationTest.php
@@ -72,7 +72,6 @@
       'theme:bartik',
       'theme_global_settings',
       'block_view',
-      'block:bartik_breadcrumbs',
       'block:bartik_content',
       'block:bartik_tools',
       'block:bartik_login',
@@ -80,7 +79,6 @@
       'block:bartik_powered',
       'block:bartik_main_menu',
       'block:bartik_account_menu',
-      'block_plugin:system_breadcrumb_block',
       'block_plugin:system_main_block',
       'block_plugin:system_menu_block__account',
       'block_plugin:system_menu_block__main',
@@ -104,7 +102,6 @@
       'theme:bartik',
       'theme_global_settings',
       'block_view',
-      'block:bartik_breadcrumbs',
       'block:bartik_content',
       'block:bartik_tools',
       'block:bartik_login',
@@ -113,7 +110,6 @@
       'block:bartik_powered',
       'block:bartik_main_menu',
       'block:bartik_account_menu',
-      'block_plugin:system_breadcrumb_block',
       'block_plugin:system_main_block',
       'block_plugin:system_menu_block__account',
       'block_plugin:system_menu_block__main',
reverted:
--- b/core/profiles/standard/config/install/block.block.bartik_breadcrumbs.yml
+++ a/core/profiles/standard/config/install/block.block.bartik_breadcrumbs.yml
@@ -1,9 +1,9 @@
 id: bartik_breadcrumbs
 theme: bartik
+weight: -5
+status: false
-weight: 0
-status: true
 langcode: en
+region: '-1'
-region: breadcrumb
 plugin: system_breadcrumb_block
 settings:
   id: system_breadcrumb_block
reverted:
--- b/core/profiles/standard/config/install/block.block.seven_breadcrumbs.yml
+++ a/core/profiles/standard/config/install/block.block.seven_breadcrumbs.yml
@@ -1,9 +1,9 @@
 id: seven_breadcrumbs
 theme: seven
+weight: -2
+status: false
-weight: 0
-status: true
 langcode: en
+region: '-1'
-region: breadcrumb
 plugin: system_breadcrumb_block
 settings:
   id: system_breadcrumb_block
reverted:
--- b/core/themes/bartik/bartik.info.yml
+++ a/core/themes/bartik/bartik.info.yml
@@ -17,7 +17,6 @@
   page_top: 'Page top'
   page_bottom: 'Page bottom'
   highlighted: Highlighted
-  breadcrumb: Breadcrumb
   featured: Featured
   content: Content
   sidebar_first: 'Sidebar first'
reverted:
--- b/core/themes/bartik/templates/page.html.twig
+++ a/core/themes/bartik/templates/page.html.twig
@@ -32,6 +32,9 @@
  *   on the theme settings page. If hidden, the "visually-hidden" class is
  *   added to make the site slogan visually hidden, but still accessible.
  *
+ * Navigation:
+ * - breadcrumb: The breadcrumb trail for the current page.
+ *
  * Page content (in order of occurrence in the default page.html.twig):
  * - title_prefix: Additional output populated by modules, intended to be
  *   displayed in front of the main title tag that appears in the template.
@@ -66,7 +69,6 @@
  * - page.footer_thirdcolumn: Items for the third footer column.
  * - page.footer_fourthcolumn: Items for the fourth footer column.
  * - page.footer: Items for the footer region.
- * - page.breadcrumb: Items for the breadcrumb region.
  *
  * @see template_preprocess_page()
  * @see bartik_preprocess_page()
@@ -128,9 +130,7 @@
   {% endif %}
 
   <div id="main-wrapper" class="clearfix"><div id="main" class="clearfix">
+    {{ breadcrumb }}
-    {% if page.breadcrumb %}
-      {{ page.breadcrumb }}
-    {% endif %}
 
     <main id="content" class="column" role="main"><section class="section">
       {% if page.highlighted %}<div id="highlighted">{{ page.highlighted }}</div>{% endif %}
reverted:
--- b/core/themes/seven/seven.info.yml
+++ a/core/themes/seven/seven.info.yml
@@ -23,6 +23,5 @@
   page_top: 'Page top'
   page_bottom: 'Page bottom'
   sidebar_first: 'First sidebar'
-  breadcrumb: breadcrumb
 regions_hidden:
   - sidebar_first
reverted:
--- b/core/themes/seven/templates/page.html.twig
+++ a/core/themes/seven/templates/page.html.twig
@@ -26,6 +26,9 @@
  * - site_slogan: The slogan of the site. This is empty when displaying the site
  *   slogan has been disabled in theme settings.
  *
+ * Navigation:
+ * - breadcrumb: The breadcrumb trail for the current page.
+ *
  * Page content (in order of occurrence in the default page.html.twig):
  * - title_prefix: Additional output populated by modules, intended to be
  *   displayed in front of the main title tag that appears in the template.
@@ -74,9 +77,7 @@
       <div class="tabs-secondary clearfix" role="navigation">{{ secondary_local_tasks }}</div>
     {% endif %}
 
+    {{ breadcrumb }}
-    {% if page.breadcrumb %}
-      {{ page.breadcrumb }}
-    {% endif %}
 
     <main class="page-content clearfix" role="main">
       <div class="visually-hidden"><a id="main-content" tabindex="-1"></a></div>