An unprecedented St Patrick's Day is upon us. Ireland's streets are usually packed with parade-goers, participants, onlookers, locals and tourists alike but today those same streets will be quiet and mostly empty. While all parades and mass gatherings have been cancelled, Tourism Ireland has confirmed that the Global Greening project will go ahead this year. This will see hundreds of landmarks and sites in over 50 countries are set to go green over the next couple of days to mark St Patrick's Day, just like Niagara Falls in our image above.