The Kon-Tiki Museum is a museum in the Bygdøy peninsula in Oslo, Norway. It houses vessels and maps from the Kon-Tiki expedition, as well as a library with about 8000 books. It was opened in a provisional building in 1949. In 1957, the current building—designed by architects F. S. Platou and Otto Torgersen—was opened. In 1978, an extension of the museum designed by Torgersen was opened.