Now is a great time to visit the Olympic Park. Construction of the main five venues - the main Stadium, the Velodrome (for bikes), the Aquatics Centre, the Olympic Village and the media & business centre - is well underway. Official tours are available at weekends, at 9.30am, 11am, 1.30pm and 3pm Saturdays and Sundays. They take about an hour, starting and finishing at Stratford tube. Call 0300 2012 001 to book, 9-5 Monday-Friday.