The Olympic-size ice-skating rink inside the Dubai Mall is extremely popular with families, especially in hot weather. There are different timings for public sessions, evening disco sessions, and even times for "moms and tots." Tickets are valid for 2 hours, and lessons and lockers are available for an extra charge. If you come in the evening be sure also to take time out to see the spectacular Dubai Fountain, just outside the mall. The dancing fountain designed by the creators of the Las Vegas Fountains of Bellagio takes place over the Burj Khalifa Lake with jets shooting water up as high as 150m (500 ft.). Choreographed to a dazzling sound and incandescent light display, the free show happens every 30  minutes starting at 6pm until  11pm close. On Friday and Saturday a mini 5-mintue show runs every 30 minutes between 1 and 2pm. Try to arrive a few minutes before the start to secure a good spot.