With the Euro 2016 championship underway, organisers are firing-up a little extra international rivalry with a social media competition.
Essentially, whichever country collects the most hashtags by the end of each day wins. And the prize is pretty majestic: the Eiffel Tower will be lit up in the colours of the triumphant country's flag. It's an indicator of how much the organisers of the football championship, which is being held in France, want to create an online-buzz around the event.
Croatia, as it stands is in the top 10, while Turkey, at number one, currently has the steel landmark shining in red and white.
The Croatian team are keen to rally fans' support. So, if you'd like to see the Croatian tricolour splashed across France's most famous landmark, post #Cro on Facebook, Twitter and Instagram.