The four-stage viewing gallery inside Wyld's Great Globe in 1851 is presented here. Passages for exhibiting maps and dioramas were between the rotunda wall and the curved surface of the globe. 

Source: Anonymous. Interior of Wyld's Great Globe, Leicester Square, 1851. The Illustrated London News, 1851 in Sheppard FHW (ed). Survey of London, The Parish of St. Anne Soho, Vol. 34, 1966.
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