Netherland's Queen Beatrix has given up throne for son
People in The Netherlands wore orange outfits, put up flowers and waved flags for a massive national party to celebrate their new king.
Queen Beatrix has ruled the Netherlands for 33 years but stepped down to make way for her son Prince Willem-Alexander.
It's not the first time this has happened in the country.
There were big parties in the country to mark the change of ruler.