Top: overlay of 4.05 μm Brα (green), 2.12 μm H₂ (blue), and 1.64 μm [Fe II] (red) images of NGC 6537, rotated through 47° in PA (such that the polar axis is horizontal in the image). The inset shows a zoom into the core region, which is saturated in the wide-field rendering. Bottom: schematic of the main structural components of NGC 6537: (1) H₂-bounded polar lobes; (2) point-symmetric, [Fe II]-emitting regions along opposing lobe walls; (3) slowly expanding equatorial molecular torus with ionized interior; and (4) bubble-like dust structure detected in PAH emission. The line of sight toward the system (indicated at the upper right of the diagram) is such that both the polar axis and the equatorial torus are viewed at intermediate inclination. See text (Section 4.1).