Quantum metrology allows for a tremendous boost in the measurement accuracy of diverse physical parameters. The estimation of a rotation constitutes a remarkable example of this quantum-enhanced precision. The recently introduced Kings of Quantumness are especially germane for this task when the rotation axis is unknown, as they have a sensitivity independent of that axis and they achieve a Heisenberg-limit scaling. We will discuss the properties of these states and report their experimental realization confirming their impressive metrological abilities.