Our friends at Ripley's Aquarium of Canada have passed along tickets to give away. If you haven't checked out Toronto's newest attraction yet, here's your chance!

Before you can enter the contest, you must study the image below. It's a picture of a long-ago Toronto skyline, captured around 2007. There are many present-day buildings that are missing from this shot. To enter the contest, name three buildings standing today that are not in this picture. You'll automatically be entered into our random draw to win the Ripley's Aquarium tickets. Email your answer here.

Good luck!

Entries will be accepted up to 11:59 PM, Eastern Standard Time, Thursday, February 6, 2014.

Toronto skyline circa 2007, image by Edward Skira