Gustav II Adolf (9 December 1594 – 6 November 1632, O.S.); widely known in English by his Latinized name Gustavus Adolphus, or as Gustavus Adolphus the Great (Swedish: Gustav Adolf den store, Latin: Gustavus Adolphus Magnus, a formal posthumous distinction passed by the Riksdag of the Estates in 1634); was the King of Sweden from 1611 to 1632 and is credited as the founder of Sweden as a Great Power (Swedish: Stormaktstiden). He led Sweden to military supremacy during the Thirty Years War, helping to determine the political as well as the religious balance of power in Europe.
He is often regarded as one of the greatest military commanders of all time, with innovative use of combined arms. His most notable military victory was the battle of Breitenfeld. With a superb military machine with good weapons, excellent training, and effective field artillery, backed by an efficient government which could provide necessary funds, Gustavus Adolphus was poised to make himself a major European leader, but he was killed at the battle of Lützen in 1632. He was ably assisted in his efforts by Count Axel Oxenstierna, the Lord High Chancellor of Sweden, who also acted as regent after his death.
The Vasa Museum (Swedish: Vasamuseet) is a maritime museum in Stockholm, Sweden. Located on the island of Djurgården, the museum displays the only almost fully intact 17th century ship that has ever been salvaged, the 64-gun warship Vasa that sank on her maiden voyage in 1628. The Vasa Museum opened in 1990 and, according to the official web site, is the most visited museum in Scandinavia. Together with other museums such as Stockholm Maritime Museum, the museum belongs to the Swedish National Maritime Museums (SNMM).