An "activity centre" is a place where people can go to participate in different fun and engaging activities. It is usually a designated place that offers a variety of activities to keep people entertained and occupied. Full definition
It also has a dedicated onsite children's activity centre for kids from 18 months to 15 years. (travellermade.com)
The main activity centres around a diamond 9 activity but photographs and clips are also used to stimulate ideas. (tes.com)
Finding a work placement or doing voluntary work, in an outdoor activities centre, for example, is a valuable way of gaining experience. (prospects.ac.uk)