source: twentyfourteen/4.3/image.php

<?php
/**
 * The template for displaying image attachments
 *
 * @package WordPress
 * @subpackage Twenty_Fourteen
 * @since Twenty Fourteen 1.0
 */

// Retrieve attachment metadata.
$metadata = wp_get_attachment_metadata();

get_header();
?>

        <section id="primary" class="content-area image-attachment">
                <div id="content" class="site-content" role="main">

        <?php
        // Start the Loop.
        while ( have_posts() ) :
                the_post();
                ?>
                <article id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
                        <header class="entry-header">
                                <?php the_title( '<h1 class="entry-title">', '</h1>' ); ?>

                                <div class="entry-meta">

                                        <span class="entry-date"><time class="entry-date" datetime="<?php echo esc_attr( get_the_date( 'c' ) ); ?>"><?php echo esc_html( get_the_date() ); ?></time></span>

                                        <span class="full-size-link"><a href="<?php echo esc_url( wp_get_attachment_url() ); ?>"><?php echo esc_html( $metadata['width'] ); ?> &times; <?php echo esc_html( $metadata['height'] ); ?></a></span>

                                        <span class="parent-post-link"><a href="<?php echo esc_url( get_permalink( $post->post_parent ) ); ?>" rel="gallery"><?php echo get_the_title( $post->post_parent ); ?></a></span>
                                        <?php edit_post_link( __( 'Edit', 'twentyfourteen' ), '<span class="edit-link">', '</span>' ); ?>
                                </div><!-- .entry-meta -->
                        </header><!-- .entry-header -->

                        <div class="entry-content">
                                <div class="entry-attachment">
                                        <div class="attachment">
                                                <?php twentyfourteen_the_attached_image(); ?>
                                        </div><!-- .attachment -->

                                        <?php if ( has_excerpt() ) : ?>
                                                <div class="entry-caption">
                                                        <?php the_excerpt(); ?>
                                                </div><!-- .entry-caption -->
                                                <?php endif; ?>
                                </div><!-- .entry-attachment -->

                                <?php
                                        the_content();
                                        wp_link_pages(
                                                array(
                                                        'before'      => '<div class="page-links"><span class="page-links-title">' . __( 'Pages:', 'twentyfourteen' ) . '</span>',
                                                        'after'       => '</div>',
                                                        'link_before' => '<span>',
                                                        'link_after'  => '</span>',
                                                )
                                        );
                                ?>
                                </div><!-- .entry-content -->
                        </article><!-- #post-<?php the_ID(); ?> -->

                        <nav id="image-navigation" class="navigation image-navigation">
                                <div class="nav-links">
                                <?php previous_image_link( false, '<div class="previous-image">' . __( 'Previous Image', 'twentyfourteen' ) . '</div>' ); ?>
                                <?php next_image_link( false, '<div class="next-image">' . __( 'Next Image', 'twentyfourteen' ) . '</div>' ); ?>
                                </div><!-- .nav-links -->
                        </nav><!-- #image-navigation -->

                        <?php comments_template(); ?>

                <?php endwhile; // End of the loop. ?>

                </div><!-- #content -->
        </section><!-- #primary -->

<?php
get_sidebar();
get_footer();