A trapeze. Technically that might not be considered gymnastics though it is obviously very closely related because it is not a competitive discipline or aparatus within gymnastics.
To do flips and things, starting at level 5
mat
they are called gymnasts and the feats are moves or skills
They're called gymnasts.
There is no requirement for the bars but they are generally 180cm apart. The gymnasts feet shouldn't be hitting the low bar while swinging on the high bar.
In sports halls or arenas called gymnasiums.
Bar Rescue - 2011 In a Pinch - 3.7 SUSPENDED was released on: USA: 24 March 2013
High Bar, Pommel Horse, Vault, Floor Exercise, Rings, Parallel Bars.
Both men and women do floor and vault! Both also do some sort of bar routine! Boys do high bar and parellel bar Women do uneven bar
They are called the uneven bars.
Bar Rescue - 2011 In a Pinch 3-7 SUSPENDED was released on: USA: 24 March 2013
State of Georgia - 2011 Trapped at a Bar 2-3 SUSPENDED was released on: USA: 9 January 2013