If you're looking to quaff a free ice-cold Molson Canadian beer in one of these specially selected locations, you'll need a Canadian passport to open the refrigerator.

As part of a clever online and TV ad campaign by agency Rethink Canada, fire-engine-red refrigerators full of Molson beer were strategically placed across a variety of European locations to attract crowds.

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As you can watch in the heartwarming video above, as soon as a Canadian steps up and scans a passport in the refrigerator, it's party time.

We're wondering how the bright red fridge will attract a crowd in some of the more remote locations. Perhaps Molson is hoping rural residents will be enticed to drive to take advantage of the free beer, gathering from miles around. Somebody better remember to bring along a Canadian or a Canadian passport, though.

The Rethink agency says we'll see more of the red refrigerators in the months to come. The Molson campaign, which has the tagline "I am Canadian," will continue its tour, quenching the thirst of the parched throngs of Europe, and perhaps beyond.

Rethink is promoting the campaign on Twitter, too:

We took a beer fridge to Europe and there's only one way to open it: http://t.co/YtIrZ2eCff — Rethink (@rethinkcanada) June 24, 2013

What do you think of this advertising campaign? What would you do for a free beer? Let us know in the comments what you think.

Photo and video courtesy of YouTube, Molson