Thor Heyerdahl is one of history's most famous explorers. In 1947 he crossed the Pacific Ocean on the balsa raft Kon-Tiki and four years later he won an Oscar for his documentary film about the expedition. He later carried out similar expeditions with the reed boats Ra, Ra II and Tigris, where he also conveyed a strong commitment to the environment and world peace. Heyerdahl was also responsible for important archaeological excavations in the Galapagos, Easter Island and Túcume. The Kon-Tiki Museum contains objects from Heyerdahl's world-famous expeditions, the original Kon-Tiki raft and the reed boat Ra II.