The viking longship Sea Stallion of Glendalough sails through the Limfjorden in Northern Jutland on August 3, 2008 after its journey across the North Sea. The ship, a reconstruction of a 30 metre long warship built in Dublin in the viking age, was on its way back to the Viking Museum in the town of Roskilde where it built as a reconstruction of the Skuldelev 2, which was excavated in Roskilde Fjord fifty years ago. Research has established that the ship was originally built in Dublin by vikings in 1042. (HENNING BAGGER/AFP/Getty Images) #