Is there something similar in PL?
There is something similar in the US. Check out the PLND ETF.
I think one of the safest bets with a nice return is land, specifically ag. Land prices didn't skyrocket like buildings did. They grew a bit quicker than inflation. 100k might not be enough to see the returns that you want, in agriculture, the bigger the better. Remember EU funds + farming revenue = happy investor.