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.