<?php
$posts = get_field(‘major_city’);
if( $posts ): ?>
<?php foreach( $posts as $post): // variable must be called $post (IMPORTANT) ?>
<?php setup_postdata($post); ?>
<?php the_title(); ?>
<span>Custom field from $post: <?php
the_post_thumbnail();
?></span>
<?php endforeach; ?>
<?php wp_reset_postdata(); // IMPORTANT – reset the $post object so the rest of the page works correctly ?>
<?php endif; ?>