sample

<?php
$provinces_cat_id = 6;
$current_cat = get_query_var('cat');
$thisCat = get_category($current_cat,false);
$subjects=  get_categories('hide_empty=0&child_of='.$current_cat);

if(isset($_GET['show']) && $_GET['show'] == 'map') { // show the maps
    if(isset($_GET['type']) && $_GET['type'] == 'provinces'){
        $thisCat_parent = get_category($current_cat,false);
        // show map of country with clickable provinces
        echo 'show map of country with clickable provinces';
        $provinces = get_categories('hide_empty=0&exclude=1&orderby=slug&order=ASC&parent='.$provinces_cat_id);
        echo "<ul class=\"country\">";
            foreach($provinces as $province) {
                $postsinregions = get_posts('hide_empty=0&category='.$province->cat_ID);
            if(!$postsinregions) {
                echo "<li class=\"".$province->cat_name."\"></li>";
                    } else {
                    echo "<li class=\"".$province->cat_name."\"><a href=\"" . get_category_link($current_cat) . "?show=map&type=regio&place_id=".$province->cat_ID."\"><span>". get_cat_name($province->cat_ID) ."</span></a> has posts</li>";
                    $sublevel_cat = get_posts(array( 'category__and' => array( $province->cat_ID, $current_cat ) ) );
                        if($sublevel_cat) {
                            echo 'category '.get_cat_name($province->cat_ID).' has post about '.get_cat_name($current_cat);
                        } else {
                            echo 'category '.get_cat_name($province->cat_ID).' has no posts about '.get_cat_name($current_cat);
                            }
            }
        }
        echo "</ul>";
        echo "<li>Go back to: <a href=\"" . get_category_link($thisCat_parent->parent) . "\"><span>". get_cat_name($thisCat_parent->parent) ."</span></a></li>";
    }
}



if(isset($_GET['type']) && $_GET['type'] == 'regio') {
    if(isset($_GET['place_id']) && $_GET['place_id']) {
        echo 'show map of province with clickable regios: '.get_cat_name($_GET['place_id']);
        // show map of province with clickable regios
            $regios = get_categories('hide_empty=0&exclude=1&orderby=slug&order=ASC&parent='.$_GET['place_id']);
        $catid = $_GET['place_id'];
        $catname = get_cat_name($catid);
        echo "<ul class=\"Province-" . $catname . "\">";
        $i = 1;
            foreach($regios as $regio) {
                $postsinregions = get_posts('hide_empty=0&category='.$regio->cat_ID);
            if(!$postsinregions) {
            echo "<li class=\"regio".$i."\"></li>";
            } else {
                echo "<li class=\"regio".$i."\"><a href=\"" . get_category_link($current_cat) . "?show=posts&type=regio&place_id=".$regio->cat_ID."\"><span>". get_cat_name($regio->cat_ID) ."</span></a> has posts</li>";
                $sublevel_cat = get_posts(array( 'category__and' => array( $regio->cat_ID, $current_cat ) ) );
                    if($sublevel_cat) {
                        echo 'category '.get_cat_name($regio->cat_ID).' has post about '.get_cat_name($current_cat);
                    } else {
                        echo 'category '.get_cat_name($regio->cat_ID).' has no post about '.get_cat_name($current_cat);
                }

        $i++;
        }
        echo "</ul>";
        echo "<li>Go back to: <a href=\"" . get_category_link($current_cat) . "?show=map&type=provinces\"><span>Country map</span></a></li>";
    }
}