Sha Ka Ree

In the Star Trek universe, Sha Ka Ree is a planet located at the center of the galaxy beyond the great barrier which is supposedly the home of God (several races have different words for the same concept).

In Star Trek V: The Final Frontier, Spock's Vulcan half brother and his followers hijack the Enterprise in order to visit this planet, only to discover that the being that exists there is not God but some other advanced, ethereal being which has been imprisoned there.