No the pictures are taken from Christiania official site, which you can find a link to at the bottom of the post :) The pictures are free to use for anybody and they have a bunch more if your interested in seeing more!
You can't take pictures there, they have a "photo-ban" (at least in the city), which is why I think they have an album of photos on their website that people can use when wanting to show this beautiful place!
Glad you liked my writing, peace dude! :)