Viking History  (Denmark). &#39;The Vikings were not just plunderers  but successful traders, extraordinary  mariners and insatiable explorers. Getting a  feel for the Viking era is easy, whether visiting  the ship-burial ground of Ladby, the  Viking forts of Zealand, the longship  workshops at Roskilde or the museums  that seek to re-create the era with live  re-enactments.&#39; http://www.lonelyplanet.com/denmark