Harris Street, near Darling Harbour; open 10 am to 5 pm, entry fee. Housed in a huge old power station is the Museum of Applied Arts and Sciences. Here they have a colossal display of anything that’s even remotely concerned with science. If you choose to look at what interests you (for instance: brewing, wallpaper, old firepieces) this can be one of the major experiences of your trip. Take up their challenge – ‘something for everyone’ – and you won’t be disappointed. (www.powerhousemuseum.com)