sentences:  Their Royal Highnesses visited Toowoomba on 24 April following an invitation by Steven Rafter to visit the Toowoomba Grammar School.The Queen and Prince Philip also made a popular visit in 1988 as part of the bicentenary celebrations.On Saturday 30 April 1988, the Queen opened the World Expo in Brisbane before opening the new permanent Parliament House in Canberra on Monday 9 May.