Uruguay has become the first country in the world to legally sell marijuana for recreational use.
Sixteen pharmacies started dispensing marijuana on Wednesday,
Almost 5,000 people have signed up to a national registry to be able to buy marijuana legally. They will be able to buy up to 10g (0.35oz) a week and no more than 40g a month.
The move comes four years after a law was passed which fully legalised the cannabis trade.
Supporters of the law argue that it will help stop the illegal trade in marijuana and put drug dealers out of business.