From the beginning of 1961 to 1983, Vasa was housed in a temporary structure called Wasavarvet ("The Vasa Shipyard") where she was treated with polyethylene glycol. Visitors could only view the ship from two levels and the maximum distance was only 5 m (17 ft). In 1981, the Swedish government decided that a permanent Vasa museum was to be constructed and a competition for the design of the museum building was organized. A total of 384 architects sent in models of their ideas and the final winners were Marianne Jakobbäck and Göran Månsson with Ask ("box"). The construction of the new building began on and around the dry dock of the old naval yard with an inauguration ceremony hosted by Prince Bertil on 2 November 1987. Vasa was towed into the flooded dry dock under the new building in December 1987, and during the summer of 1989, when visitors were allowed onto the construction site, 228,000 people visited the half-finished museum. The museum was officially opened on 15 June 1990.[1] So far, Vasa has been seen by over 25 million people. In 2017, the museum had a total of 1,495,760 visitors.[2]

The main hall contains the ship itself, and various exhibits related to the archaeological findings of the ships and early 17th-century Sweden. Vasa has been fitted with the lower sections of all three masts, a new bowsprit, winter rigging, and has had certain parts that were missing or heavily damaged replaced. The replacement parts have not been treated or painted and are therefore clearly visible against the original material that has been darkened after three centuries under water.

The new museum is dominated by a large copper roof with stylized masts that represent the actual height of Vasa when she was fully rigged. Parts of the building are covered in wooden panels painted in dark red, blue, tar black, ochre yellow and dark green. The interior is similarly decorated, with large sections of bare, unpainted concrete, including the entire ceiling. Inside the museum the ship can be seen from six levels, from her keel to the very top of the sterncastle. Around the ship are numerous exhibits and models portraying the construction, sinking, location, and recovery of the ship. There are also exhibits that expand on the history of Sweden in the 17th century, providing background information for why the ship was built. A movie theatre shows a film in alternating languages on the recovery of the Vasa.

The museum is in the process of publishing an 8-volume archaeological report to commemorate the 50th anniversary of the salvage. Vasa I: The Archaeology of a Swedish Warship of 1628 was published at the end of 2006. Subsequent volumes will be published annually.[3]

The museum also features four other museum ships moored in the harbour outside: the ice breaker Sankt Erik (launched 1915), the lightvessel Finngrundet (1903), the torpedo boat Spica (1966) and the rescue boat Bernhard Ingelsson (1944).