Template

<?php
    $args = array(
        'post_type' => 'attachment',
        'posts_per_page' => -1,
        'post_status' => 'any',
        'post_parent' => null,
        'tax_query' => array(
            array(
                'taxonomy' => 'post_tag',
                'field' => 'slug',
                'terms' => 'logo'
            )
        )
    );

$images = get_posts( $args );
if ( $images ) {
    foreach ( $images as $image ) {
        // Get the parent post ID
        $parent_id = $image->post_parent;
        // Get the parent post Title
        $parent_title = get_the_title( $parent_id );
        // Get the parent post permalink
        $parent_permalink = get_permalink( $parent_id );
        // Get image caption
        $logoimg = wp_get_attachment_image( $image->ID, 'Work Gallery' );

        $t = wp_get_post_tags($parent_id);
            $slugs = array();
            foreach($t as $slug) {
                array_push($slugs, $slug->name);
            }
            $slugs = implode(', ', $slugs);

            $posttags = get_the_tags();
                if ($posttags) {
                    foreach ($posttags as $tag) {
                        //str_replace('-','_', $tag->slug . ' ');
                        str_replace(array('-', '&', ' '), array('&'. '&', '&'), $tag->slug);
                    }
                }

            echo '<aside class="work_item" data-id="id-' . $parent_id . '" data-type="' . $slugs . '">';

                echo '<ul>';

                    echo '<li>';

                        echo '<div class="img_wrap">';

                            echo $logoimg;

                        echo '</div>';

                        echo '<ul class="work_meta">';

                            echo '<li class="work_title">';

                                echo ' ' . $parent_title . ' ';

                            echo '</li>';

                            echo '<li class="work_item_content">';

                                echo gds_get_excerpt($image->ID);

                            echo '</li>';

                        echo '</ul>';

                        echo '<ul class="work_features">';

                            echo '<li class="lightbox">';

                                $src = wp_get_attachment_image_src( $image->ID, 'full' );
                                $src = $src[0]; // Grabs only the URL ($src[1] = width of image, $src[2] = height of image)

                                echo '<a class="work_lb tooltip works_gal" data-rel="prettyPhoto[mixed]" data-id="' . get_the_ID() . '" title="view in lightbox" href="' . $src . '">';

                                    echo 'Lightbox';

                                echo '</a>';

                            echo '</li>';

                        echo '</ul>';

                    echo '</li>';

                echo '</ul>';

            echo '</aside>';

        }
        wp_reset_postdata();
    }
?>