The Viking Ship Museum overlooking the inlet of Roskilde Fjord was built in 1969 with the main purpose of exhibiting the five newly discovered Skuldelev ships. In the late 1990s, excavations for the shipyard expansion of the museum uncovered a further 9 ships from the Viking Age and early medieval period. It is the largest discovery of prehistoric ships in Northern Europe and includes the longest Viking warship ever found; the "Roskilde 6" at 36 metres. The excavations are not yet completed.