Children usually enjoy a visit to this science center for two reasons: First, it's located in an old jail, a sturdy stone structure built in the 1840s (and still used as a jail as late as 1996). And then there are the great exhibits: more than 150 interactive displays in all, both indoors and out. Kids can fool around with a huge kaleidoscope, use a periscope to people-watch, check out a solar-powered water fountain, make patterns with a laser beam, even create a miniature tornado -- though, truth be told, the dungeon museum probably will impress them more than all that. It's an ideal place to visit with the kids on a chilly or rainy day, and there's lots to do outside here on nice days, too. This is one of Canada's preeminent science museums, and if you have kids with a spark of curiosity, this place is easily worth up to 2 hours of your time.