Holder Mathias is architect and lead designer at Center Parcs Woburn Forest for the 16,000m2 pool and leisure building together with the 24,000m2 sports, conference and spa complex with a combined construction value of £97m. These feature Center Parcs’ largest and most sophisticated "sub tropical swimming paradise" (STSP), a state of the art spa, sports facilities and conference venue together with a wide range of restaurants, retail offers and leisure activities. The whole complex is designed to be invisible from outside the site and this was instrumental in securing planning consent at a public inquiry.