Before tourism became Key West's major source of income,'wreckers' earned their living by salvaging what they could from ships wrecked on the reefs. At the Key West Shipwreck Museum, you can learn about the 'wreckers' and see jewelry, china, house wares and other artifacts from the Isaac Allerton, which sank in 1856. An observation tower offers a great view. The tour guides are living history actors. Admission is USD8 for adults and USD4 for children. There are shows every 30 minutes.