Although the internships are unpaid, they are considered a form of work and so it is necessary to have an appropriate visa that allows you to work. One of the most used and easiest options is the Working Holiday Visa.
If you are from a country that is part of the working holiday visa scheme then you can get a working holiday visa.
Some countries have quotas but some countries such as the USA, The Netherlands, The UK, Germany, France and others have unlimited numbers of working holiday visas
Check the links below for availability for your country
If you are from a country that is part of the working holiday visa scheme then you can get a working holiday visa.
Some countries have quotas but some countries such as the USA, The Netherlands, The UK, Germany, France and others have unlimited numbers of working holiday visas
Check the links below for availability for your country