The Ballroom and Tea Room are linked by the Octagon Room which
was originally intended as a circulating space which could also be
used for music and playing cards. On Sundays, when cards were not
allowed, visitors could listen to the organ, which once stood in
the musician's gallery.
Perhaps because more space was needed, a new Card Room was added
in 1777 but the architect is not known. Today this room is used as
a refreshment room.
The Octagon Room is dominated by Gainsborough's portrait of the
first Master of Ceremonies at the Upper Rooms, Captain William
Wade. Bath's most famous Master of Ceremonies, Richard "Beau"
Nash, never knew this building as he died in 1761.