Hampton Open-Air Pool

This 36-metre pool in Bushy Park dates from 1922. Like many old recreational facilities, it was closed by the local council during the 1980s - but a local community action group prevented its demolition. It's now operated by a not-for-profit trust and boasts a learner pool, gym and sunbathing area. Uniquely, it's open 365 days a year with 1,000-odd swimmers enjoying a dip on Christmas Day before tucking into the turkey.