My late father-in-law was an expert with the abacus so when my wife suggested we take him to see the Abacus Museum while we were living in Linhai I quickly agreed but had reservations. How interesting could an abacus museum be? And wasn't I wrong. It's a fascinating place. The owner used to work in an abacus factory and began collecting old and unusual versions of this ancient calculator. The museum has an abacus used by China's great statesman, Zhou En Lai, a very old porcelain one dug up while excavating foundations for a new sky-scraper in Shanghai, and others ranging from the very small to the biggest functioning abacus in the world. There are some awesome examples of old Chinese craftsmanship, interesting historical notes, and even a round abacus or two. Well worth a visit.