The other in an arena or "exposed structure venue" such as a convention center, ballroom, warehouse etc.
Circus rigging, comprising aerial acrobatic apparatuses that support human beings under dynamic loading conditions, and stabilization rigging for large scale fabric tension structures (big tops), is, perhaps, under appreciated in the general rigging field, and may be considered by some to be a separate field.
In both tented and arena circuses, crane-bars or frames stabilized by guy cables, hung from fiber rope block and tackle systems are common, as are systems supporting and tensioning safety nets.
Automation rigging is used by many circuses, to fly both human beings and scenic or prop elements.
arena and theater rigging certification programs as well as S.P.R.A.T rope access training.