Mumbles Lighthouse

Mumbles Lighthouse is an octagonal structure made of coursed rubble stone, painted white. The lighthouse features a stepped, double-skinned design, with the inner tower rising higher than the outer tower. The outer tower stands at 8.5 meters and is slightly stepped, forming three distinct stages. It has an arched doorway with a plaque above inscribed "MDCCXCIII Wm Jernegan arch." At the top of the outer tower, there is a projecting platform with bellied cast-iron rails that was originally intended for a fire-basket. The inner tower extends an additional 6 meters and ends in a cast-iron octagonal lantern with lattice glazing, which is a recent replacement. A projecting cast-iron gallery with a bellied rail was cast at Neath Abbey Foundry in 1798.

The lighthouse is surrounded on three sides by a battery. Inside, the narrow inner tower contains a staircase with a cast-iron handrail, found only in the upper stage, providing access to the lantern's interior. The lower stage features an open central well that was originally used for hauling coal to the two lanterns. The main staircase leading to the lower platform is situated in the vaulted space between the outer and inner towers, with a recent roof covering the exposed section of this staircase as it continues above the middle gallery.