Right of public access

Also: allemansrätten, allemannsretten

In Sweden, Norway and Finland, the right of public access lets you roam nature largely freely and camp for a night in many places, with consideration and rules.

That's one of the reasons why Scandinavia is so attractive for packrafters. But there are limits: keep your distance from houses, cause no damage, respect national park rules and fire bans. The details differ from country to country.