In Australia, the National Carillion and Telstra Tower lit up Canberra's night sky. On the other side of the country, numerous monuments in Perth, including the Matagarup Bridge (below) were also illuminated.
From New York to San Francisco, monuments on both sides of the United States shone bright.
From Malaysia to Milan and Sarajevo, the EU flag was on show.
The EU flag has also been flying high at Reconciliation Place in Canberra. The flag is a circle of 12 gold stars on a blue background. The stars stand for the ideals of unity, solidarity and harmony and nothing to do with the number of EU Member States.
Kuwait's tallest skyscraper, the Al Hamra tower, looked lush in blue.
In Canada, landmarks from Halifax top Victoria were illuminated.
About Europe Day
On the 9th of May 1950, French Foreign Minister Robert Schuman presented his historic proposal for an integrated European coal and steel community, indispensable to the maintenance of peaceful relations. This proposal, known as the "Schuman declaration," is considered to be the founding document of what is now the European Union. Each year, the European Union Delegation to Australia hosts a celebration to mark Europe Day.
By establishing the European Economic Community (EEC) and the European Atomic Energy Community (Euratom) on 25 March 1957 in Rome, the EU founding fathers laid the foundations for something greater: an ever closer union that binds together the peoples of Europe in peace, prosperity and solidarity through the four freedoms – the free movement of people, goods services and capital. These treaties brought peace, prosperity and security to millions of people in Europe.
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