In Lithuania very close to the longest river Nemunas 20 hectares of land-plot is on sale. The plot has common 500 meters border on the river watershed from one side, a nice forest from another side of the land with two small artificial lakes in it. It is a remarkably beautiful place for making tourism or rest service complex (holiday camp, yacht quay, etc). Also 1 ha land plot is on sale there, available for constructing living homes.
It would be a lifetime investment, as it is very rare and difficult to find such a remarkably unique land-plot in the Baltic countries for developing this kind of business.