There are a few places on Google Earth that are not visible to users, therefore, it makes no sense to search for them. Here is a list of some of these locations you won't find even if you try:
Ramstein Air Force Base, Germany.
HAARP site, Gakona, Alaska.
Babylon, Iraq.
House of Gazprom CEO Alexey Miller, Russia.
Keowee Dam, South Carolina.
Volkel Air Base, The Netherlands.
Baker Lake, Nunavut.
Szazhalombatta Oil Refinery, Hungary.