The Balance Center of Etheria is a location from the 1985 animated series She-Ra: Princess of Power.
She-Ra: Princess of Power
The Balance Center of Etheria is a pyramid shaped temple in the mystical place called Serenia. It houses the Serenity Stone, a very powerful and magical stone as old as Etheria itself. The stone magnifies the bearers power many times owner. But if the stone is staken from it's resting place in the Balance Center, all of Etheria will be out of balance and will go spinning off to who knows where.