Here,in Estonia, everyone can walk on anyones land unless it is someones private home or its surrounding yard (lawn, fields, etc).
You can walk, hike, collect berries and mushrooms for private use everywhere (unless it is on an industrial scale).
If your piece of land is on a sea or lake side or a river, then you must provide access to it, 5 metres from the waterline must be acessible for everyone and can't be fenced off.
I once saw a news item from the uk where someone from Latvia was collecting mushrooms, the land owner didn't like this and the mushroom gathrer had to pay a big fine. Even though nobody was stolen from since the people in the uk don't know anything about wild mushrooms and thry would just rot and go bad. Kind of absurd