This small town sports hall with 3000 seats was designed to house handball, basketball, volleyball and badminton matches as well as gymnastics and martial arts competitions. An optional recreation scheme on the same surface divides the field surface into three basketball fields with dividing curtains. Supplementary programmes on sousterrain floor transform the building into a versatile sports centre. Access is arranged though a large atrium which becomes a vibrant plaza connected to the climbing centre, fitness and dance halls, wellness centre, diagnostic centre and various smaller programs. Primary hall's construction provides a cover for most of the atrium, creating a user friendly space in all conditions. Building's form is derived from functional, light and energy schemes: the roof playfully opens to the north; its undulating geometry creates a "ruffled" youthful front elevation. The roof draws soft northern light into the building; photovoltaic cells are mounted on southern slopes. Heat pumps provide energy for heating and cooling.