@nvg_localg
Looks like this conversation is just the continuation of what you asked here
Some of the items in your list (Beaches, lakes, rivers, ponds), are part of the geographic layer of Google Maps. We cannot add, edit, remove them.
Regarding ponds you had a reply already. How can i add lake \ pond in Google Maps? - #6 by JanVanHaver
Fountain was already a category in Google Maps. Now it can be replaced by different categories depending of how they are. As an example of a famous one
Park was a category in Maps, now replaced by Park and Garden. In addition Park can also define an area (geographic feature). In this last case it will not be editable
In Greece you will find them for sure. An example