Sydney is one of the most family-friendly cities in the world, packing beaches, wildlife, and world-class attractions into a compact, easy-to-navigate harbor city. Families can spend a morning watching koalas and kangaroos at Taronga Zoo (with harbor views as a bonus), splash around at Bondi or Manly Beach, and explore the interactive exhibits at the Australian National Maritime Museum or SEA LIFE Sydney Aquarium. Sydney is a walkable city which is great for wiggly kids. English is the local language, public transport is reliable, and the laid-back, outdoorsy culture means there's rarely a shortage of parks, playgrounds, and picnic spots to burn off extra energy.