The ground floor has two side rooms, each measuring 56 × 27.5 ft (17 × 8.5 m). The tower forms a carriage porch 2.4 m² (26 ft²), and a spiral staircase vestibule of 2.6 m² (28 ft²). The Tower, over the carriage porch, has a square form up to the gallery at the top of the first level which is at a height of 68 feet (20.7 m) from the ground. The form changes from a square to an octagon and the height from this gallery to the top of the tower is 118 feet (36 m) and the third stage to the top of the finial is 94 feet (28.7 m), thus making a total height of .