This isn't a gigantic ice cube. But what is it? Where is it? Can you guess?
Log in and leave your guesses below and check back on Monday for the answer!
UPDATE 1/31/12:PetraBos figured it out. This is the Council House in Perth, Australia. Though it appears to be a typical office building during the day, it turns into this beautiful light sculpture at night with help from more than 20,000 LED lights.
Lyndsey Matthews is an assistant digital editor at Travel + Leisure.
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