diff --git a/core/modules/layout/layout.admin.css b/core/modules/layout/layout.admin.css
new file mode 100644
index 0000000..6e38bf4
--- /dev/null
+++ b/core/modules/layout/layout.admin.css
@@ -0,0 +1,17 @@
+.layout-display {
+  background: rgb(224, 224, 224);
+}
+
+.layout-region-demonstration {
+  background-image: -moz-linear-gradient(bottom, rgb(70,70,71) 40%, rgb(91,91,94) 70%, rgb(125,124,125) 88%);
+  background-image: -o-linear-gradient(bottom, rgb(70,70,71) 40%, rgb(91,91,94) 70%, rgb(125,124,125) 88%);
+  background-image: -ms-linear-gradient(bottom, rgb(70,70,71) 40%, rgb(91,91,94) 70%, rgb(125,124,125) 88%);
+  background-image: -webkit-linear-gradient(bottom, rgb(70,70,71) 40%, rgb(91,91,94) 70%, rgb(125,124,125) 88%);
+  background-image: -webkit-gradient(linear, left bottom, left top, color-stop(0.4, rgb(70,70,71)), color-stop(0.7, rgb(91,91,94)), color-stop(0.88, rgb(125,124,125)));
+  background-image: linear-gradient(bottom, rgb(70,70,71) 40%, rgb(91,91,94) 70%, rgb(125,124,125) 88%);
+  color: white;
+  font-size: 0.8em;
+  margin: 3px;
+  padding: 10px;
+  text-transform: uppercase;
+}
diff --git a/core/modules/layout/layout.admin.inc b/core/modules/layout/layout.admin.inc
new file mode 100644
index 0000000..9a1a921
--- /dev/null
+++ b/core/modules/layout/layout.admin.inc
@@ -0,0 +1,75 @@
+<?php
+
+/**
+ * @file
+ * Administration functions for layouts.
+ */
+
+/**
+ * Page callback: Presents a list of layouts.
+ *
+ * @return array
+ *   An array as expected by drupal_render().
+ *
+ * @see layout_menu()
+ */
+function layout_page_list() {
+  // Get list of layouts defined by enabled modules and themes.
+  $layouts = layout_manager()->getDefinitions();
+
+  $rows = array();
+  $header = array(t('Name'), t('Source'));
+  foreach ($layouts as $name => $layout) {
+    $provider_info = system_get_info($layout['provider']['type'], $layout['provider']['provider']);
+
+    // Build table columns for this row.
+    $row = array();
+    $row['name'] = l($layout['title'], 'admin/structure/templates/manage/' . $name);
+    // Type can either be 'module' or 'theme'.
+    $row['provider'] = t('@name @type', array('@name' => $provider_info['name'], '@type' => t($layout['provider']['type'])));
+
+    $rows[] = $row;
+  }
+
+  $build = array();
+  $build['table'] = array(
+    '#theme' => 'table',
+    '#header' => $header,
+    '#rows' => $rows,
+  );
+  return $build;
+
+  // Ensure the provider types are translatable. These do not need to run,
+  // just inform the static code parser of these source strings.
+  t('module');
+  t('theme');
+}
+
+/**
+ * Page callback: Demonstrates a layout template.
+ *
+ * @param string $key
+ *   The key of the page layout being requested.
+ *
+ * @return array
+ *   An array as expected by drupal_render().
+ *
+ * @see layout_menu()
+ */
+function layout_page_view($key) {
+  $layout = layout_manager()->getDefinition($key);
+  drupal_set_title(t('View template %name', array('%name' => $layout['title'])), PASS_THROUGH);
+
+  // Render the layout in an admin context with region demonstrations.
+  $instance = layout_manager()->createInstance($key, array());
+  $regions = $instance->getRegions();
+  foreach ($regions as $region => $info) {
+    $regions[$region] = '<div class="layout-region-demonstration">' . check_plain($info['label']) . '</div>';
+  }
+  $build['demonstration'] = array(
+    '#type' => 'markup',
+    '#markup' => $instance->renderLayout(TRUE, $regions),
+  );
+  $build['#attached']['css'][] = drupal_get_path('module', 'layout') . '/layout.admin.css';
+  return $build;
+}
diff --git a/core/modules/layout/layout.module b/core/modules/layout/layout.module
index 7d82798..c6ed7ae 100644
--- a/core/modules/layout/layout.module
+++ b/core/modules/layout/layout.module
@@ -6,6 +6,55 @@
  */
 
 /**
+ * Implements hook_menu().
+ */
+function layout_menu() {
+  $items['admin/structure/templates'] = array(
+    'title' => 'Templates',
+    'description' => 'Overview of the list of layout templates available.',
+    'page callback' => 'layout_page_list',
+    'access callback' => 'user_access',
+    'access arguments' => array('administer layouts'),
+    'file' => 'layout.admin.inc',
+  );
+  $items['admin/structure/templates/manage/%'] = array(
+    'title' => 'View template',
+    'page callback' => 'layout_page_view',
+    'page arguments' => array(4),
+    'access callback' => 'layout_user_access',
+    'access arguments' => array(4),
+    'file' => 'layout.admin.inc',
+  );
+  return $items;
+}
+
+/**
+ * Access callback: Checks the existence of a layout.
+ *
+ * @param string $key
+ *   The key of the page layout being requested.
+ *
+ * @return bool
+ *   TRUE if the current user can access page layout menu items; FALSE
+ *   otherwise.
+ */
+function layout_user_access($key) {
+  return (user_access('administer layouts') && layout_manager()->getDefinition($key));
+}
+
+/**
+ * Implements hook_permission().
+ */
+function layout_permission() {
+  return array(
+    'administer layouts' => array(
+      'title' => t('Administer templates'),
+      'description' => t('Access administration functions for templates.'),
+    ),
+  );
+}
+
+/**
  * Get the layout plugin manager instance.
  *
  * @return Drupal\layout\Plugin\Type\LayoutManager
diff --git a/core/modules/layout/lib/Drupal/layout/Plugin/Derivative/Layout.php b/core/modules/layout/lib/Drupal/layout/Plugin/Derivative/Layout.php
index ce82c65..a6c4ea9 100644
--- a/core/modules/layout/lib/Drupal/layout/Plugin/Derivative/Layout.php
+++ b/core/modules/layout/lib/Drupal/layout/Plugin/Derivative/Layout.php
@@ -106,6 +106,7 @@ protected function iterateDirectories($dir, $provider) {
         $this->derivatives[$key] = $directory->read($fileinfo->getBasename('.yml'));
         $this->derivatives[$key]['theme'] = $key;
         $this->derivatives[$key]['path'] = $fileinfo->getPath();
+        $this->derivatives[$key]['provider'] = $provider;
         // If the layout author didn't specify a template name, assume the same
         // name as the yml file.
         if (!isset($this->derivatives[$key]['template'])) {
diff --git a/core/modules/layout/lib/Drupal/layout/Plugin/LayoutInterface.php b/core/modules/layout/lib/Drupal/layout/Plugin/LayoutInterface.php
index 7521c57..829f3c2 100644
--- a/core/modules/layout/lib/Drupal/layout/Plugin/LayoutInterface.php
+++ b/core/modules/layout/lib/Drupal/layout/Plugin/LayoutInterface.php
@@ -18,15 +18,25 @@
    * Returns a list of regions.
    *
    * @return array
-   *   An array of region machine names.
+   *   An associative array of region information keyed by region machine
+   *   names. Each region information element is a two item associative array
+   *   with a 'label' and a 'type' key designating the human readable label
+   *   and the type of the region.
    */
   public function getRegions();
 
   /**
    * Renders layout and returns the rendered markup.
    *
+   * @param bool $admin
+   *   (optional) TRUE if the rendered layout is displayed in an administrative
+   *   context, FALSE otherwise. Defaults to FALSE.
+   * @param array $regions
+   *   (optional) An array of region render arrays keyed by region machine
+   *   names. Defaults to array.
+   *
    * @return string
    *   Rendered HTML output from the layout.
    */
-  public function renderLayout();
+  public function renderLayout($admin = FALSE, $regions = array());
 }
diff --git a/core/modules/layout/lib/Drupal/layout/Plugin/layout/layout/StaticLayout.php b/core/modules/layout/lib/Drupal/layout/Plugin/layout/layout/StaticLayout.php
index 3ded379..f3f6762 100644
--- a/core/modules/layout/lib/Drupal/layout/Plugin/layout/layout/StaticLayout.php
+++ b/core/modules/layout/lib/Drupal/layout/Plugin/layout/layout/StaticLayout.php
@@ -78,7 +78,7 @@ public function getAdminScriptFiles() {
   /**
    * Implements Drupal\layout\Plugin\LayoutInterface::renderLayout().
    */
-  public function renderLayout($admin = FALSE) {
+  public function renderLayout($admin = FALSE, $regions = array()) {
     $definition = $this->getDefinition();
 
     // Assemble a render array with the regions and attached CSS/JS.
@@ -89,10 +89,8 @@ public function renderLayout($admin = FALSE) {
 
     // Render all regions needed for this layout.
     foreach ($this->getRegions() as $region => $info) {
-      // @todo This is just stub code to fill in regions with stuff for now.
-      // When blocks are related to layouts and not themes, we can make this
-      // really be filled in with blocks.
-      $build['#content'][$region] = '<h3>' . $info['label'] . '</h3>';
+      // Initialize regions which were not provided as empty.
+      $build['#content'][$region] = empty($regions[$region]) ? '' : $regions[$region];
     }
 
     // Fill in attached CSS and JS files based on metadata.
diff --git a/core/modules/layout/lib/Drupal/layout/Tests/LayoutDerivativesTest.php b/core/modules/layout/lib/Drupal/layout/Tests/LayoutDerivativesTest.php
index 0766838..f41460c 100644
--- a/core/modules/layout/lib/Drupal/layout/Tests/LayoutDerivativesTest.php
+++ b/core/modules/layout/lib/Drupal/layout/Tests/LayoutDerivativesTest.php
@@ -52,7 +52,7 @@ function testDerivatives() {
 
     // Render the layout and look at whether expected region names and classes
     // were in the output.
-    $render = $layout->renderLayout();
+    $render = $this->renderLayoutDemonstration($layout);
     $this->drupalSetContent($render);
     $this->assertText('Middle column');
     $this->assertRaw('class="layout-display layout-one-col');
@@ -68,7 +68,7 @@ function testDerivatives() {
 
     // Render the layout and look at whether expected region names and classes
     // were in the output.
-    $render = $layout->renderLayout();
+    $render = $this->renderLayoutDemonstration($layout);
     $this->drupalSetContent($render);
     $this->assertText('Left side');
     $this->assertText('Right side');
@@ -76,6 +76,25 @@ function testDerivatives() {
   }
 
   /**
+   * Renders the layout with sample region content.
+   *
+   * @param \Drupal\layout\Plugin\LayoutInterface $layout
+   *   The layout to be rendered.
+   *
+   * @return string
+   *   Rendered HTML output from the layout.
+   */
+  function renderLayoutDemonstration($layout) {
+    // Add sample content in the regions that is looked for in the tests.
+    $regions = $layout->getRegions();
+    foreach ($regions as $region => $info) {
+      $regions[$region] = '<h3>' . $info['label'] . '</h3>';
+    }
+
+    return $layout->renderLayout(FALSE, $regions);
+  }
+
+  /**
    * Test layout functionality as applies to pages.
    */
   function testPageLayout() {
diff --git a/core/modules/layout/tests/layout_test.module b/core/modules/layout/tests/layout_test.module
index b9eb63b..74de123 100644
--- a/core/modules/layout/tests/layout_test.module
+++ b/core/modules/layout/tests/layout_test.module
@@ -27,11 +27,19 @@ function layout_test_page() {
   global $theme;
   $theme = 'layout_test_theme';
   theme_enable(array($theme));
+
   $display = entity_load('display', 'test_twocol');
   $layout = $display->getLayoutInstance();
+
   // @todo This tests that the layout can render its regions, but does not test
   //   block rendering: http://drupal.org/node/1812720.
-  return $layout->renderLayout();
+  // Add sample content in the regions that is looked for in the tests.
+  $regions = $layout->getRegions();
+  foreach ($regions as $region => $info) {
+    $regions[$region] = '<h3>' . $info['label'] . '</h3>';
+  }
+
+  return $layout->renderLayout(FALSE, $regions);
 }
 
 /**