Complex sentence: Emerson has a HUGE gym which can be used as things such as three separate gyms each the size of a basketball court, one full size basketball court spreading across two gyms, and many other sports.
Split into simpler sentences: Emerson has a HUGE gym which can be used for many things. These include three separate gyms, each the size of a basketball court, one full size basketball court spreading across two gyms, and many other sports.