Queen's Day is a national celebration in the Netherlands that takes place annually on April 30th to celebrate the birthday of former Queen Juliana. It is one of the largest celebrations in the Dutch calendar, attracting over 3 million people to events and streets especially in Amsterdam. In 2013, the celebration was particularly important as Queen Beatrix abdicated the throne after 33 years, passing it to her son King Willem-Alexander. Queen's Day has a huge impact on tourism, contributing greatly to the industry.