There is something of a grey area when it comes to differentiating between sport and leisure facilities in Barcelona. Gyms sometimes have spas, health clubs and county clubs may have gyms, and sport centres tend to have a bit of everything. Municipal sports centres (known as polideportivos / poliesportius or centros deportivos / centres esportius) often run a 'pay and play' system alongside membership options. These also tend to have training sessions in different sports. Local swimming pools are also a reasonable option, particularly for families, and some of them have limited gym facilities. The most successful sports chain in the city is Catalan. DiR (www.dir.com) considers itself neither gym nor health club, preferring the title of 'fitness club'. In general, use of health, fitness and country club facilities requires membership. To find out where your nearest sports facilities are, the Ajuntament provides complete listings on www.bcn.es.