This paper presents GestureExplorer, which features versatile immersive visualisations to grant the user free control over their perspective, allowing them to gain a better understanding of gestures. It provides multiple data visualisation views, and interactive features to support analysis and exploration of gesture datasets. A pair of iterative user studies provides initial feedback from several participants, including experts on immersive visualisation, and demonstrates the potential of GestureExplorer for providing a useful and engaging experience for exploring gesture data.