After recent project concept update, now you can join Wall of the World for free.

And, what is more important, place where the park will be built, will be chosen by project participants by voting.

Practically that means - the more people registered from your country, the bigger the chance to reach higher score in the big vote. See http://www.walloftheworld.org/eng/facts/location/ for more info.

So, spread the world, tell about the project to people in your country!