Aerial of urban explorers walking around the property of an abandoned hopsital building in Zagreb, Croatia

urbex people sanatorium urbex post apocalyptic urban exploring psychiatric hospital chernobyl abandoned hospital abandoned building abandoned dark tourism hiking brestovac walking decay building balkan outskirts old building exterior outdoors world war medical facility hospital building hospital explorers facility mountain overgrown exterior forgotten tourism forest property clinic landmark croatia people psychiatric zagreb architecture pine forest historical mountains suburban europe tuberculosis aerial dark window