var map; function initMap() { map = new google.maps.Map(document.getElementById('map'), { center: {lat: 43.5293, lng: -5.6773}, zoom: 13, }); var marker = new google.maps.Marker({ position: {lat: 43.542194, lng: -5.676875}, map: map, title: 'Acuario de Gijón' }); }