The "House of Manannan" there is one of the best museums I've ever been to - full of interactive exhibits, informative films, animatronic robots, computer touch screens and things to hold and explore. The final exhibit challenges you to pilot a simulation ferry from Liverpool to Douglas. After finally making it, the navigator congratulated me, but went on to mention that many of the passengers were asking for their money back (well we did hit a rock and a yacht on the way!). The museum experience was also improved by being the only visitor there - it handles over 1000 people a day in high season!