Structure
The base is an equilateral triangle in section. The three walls are perpendicular to the ground for 4.5 metres (15 ft) then taper inwards to a hexagonal cupola surrounded by a triangular viewing platform reached by an internal helical stairway of 150 steps. It is believed that the three walls under the cupola represented England (including Wales), Scotland and Ireland all under one crown. The outside of the building has hardly any ornamentation ; the inside is more decorative.
The stairway is lit by five stairway windows and two cupola windows, and (when the doors are open) by the top and bottom doorways.
Read more about this topic: Hoober Stand
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