UNESCO Global GeoPark: single, unified geographical areas where sites and landscapes of international geological significance are managed with a holistic concept of protection, education and sustainable development. They typically consist of a combination of publicly and privately owned land.
Waterways: Lakes like Lough Corrib and Lough Mask, which were owned by the UK Crown Fisheries, were handed over to the Irish people. The ESB owns the Shannon and many other lakes and rivers are in public ownership.
Of course, virtual space, goes without saying these days!