The equipment and classes at the gym – named Hard Candy after her last album - have all been specially chosen by the 52-year-old Queen of Pop herself.
Her business partner Chris Dedicik said, "She chose the graphics, colours, the machines. She has weighed in on the choreography of all the classes and given them a twist to make them more dynamic, more special, and to better reflect her style."
And with one gym under her belt, Madge is now focusing on expanding her exercise empire across the world.
She tells Hollywood News, "Our plan is to use Mexico as a place to fine-tune our brand and then expand it to other countries and, in the long term, develop a global brand that includes the United States."