Quantum Leap Trampoline Sports Arena is Northeast Tennessee’s premiere indoor family fun zone. Located in the heart of historic downtown Johnson City, Quantum Leap will change the way you think about family fun. With over 41,000 square feet of wall-to-wall trampolines, arcade, café, laser tag arena, Badl Axe throwing and much more, Quantum Leap proudly has something fun for every member of the family, from toddlers to adults.