No. The Mycenaean civilization was organized around several "kingdoms" under a ruler called a wanax. Loosely, Myc. society facilitated an elite warrior caste. Each "kingdom" had an administrative center with monumental architecture, often called a "palace." A section of the palace was the "megaron," similar to a throne room. There were palaces all over the Mycenaean Greek world, at places like Mycenae, Pylos, Tiryns, and Thebes. The Myc. "kingdoms" were redistributive, meaning that the palaces took in resources from their dominion and then redistributed that wealth/food as the wanax saw fit.