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<?php
//tutti gli agriturismi vicino alla location entro 10km
	$args = array( 
		'post_type' 	=> 'strutture',
		'posts_per_page' => 300,
		'tax_query' 	=> array(
			'relation'		=> 'AND',
			array (
				'taxonomy' 	=> 'provincia-str',
				'field' 		=> 'slug',
				'terms' 		=> $term->slug,
			),
			array (
				'taxonomy' 	=> 'tipo',
				'field' 		=> 'slug',
				'terms' 		=> 'agriturismo',
			)
		),
		'meta_query' 	=> array(
			'relation'		=> 'AND',
			array(
			'key'	  		=> 'montepulciano',
			'type' 			=> 'DECIMAL', //si usa per numeri con la virgola
			'value'	  		=>  10.0,
			'compare' 		=> '<=',
			)
		)
	);
	
	
	$query = new WP_Query( $args );

<?php
// args
$args = array(
	'numberposts'	=> -1,
	'post_type'		=> 'event',
	'meta_key'		=> 'location',
	'meta_value'	=> 'Melbourne'
);


// query
$the_query = new WP_Query( $args );