You can use get_post_meta(). This is the codex article: http://codex.wordpress.org/Function_Reference/get_post_meta
It sounds like each of the custom field values you want to display would only contain one result (one country, one town etc). In that case you’d use something like this in your template, wherever you want to display the value:
<?php if ( get_post_meta($post->ID, 'country', true) ) : ?>
<?php echo get_post_meta($post->ID, 'country', true) ?>
<?php endif; ?>
Hope this helps, best of luck!