Madrid Arena is an indoor arena located in the city of Madrid, in the fairgrounds in the Casa de Campo, just minutes from the city centre. Built from the old Rocódromo, the pavilion was designed by Spanish architects Estudio Cano Lasso who designed this versatile building in 2001 to host sporting events, commercial, cultural and leisure activities. The pavilion was sponsored by the company Telefónica for what was also known as Telefónica Arena.