Take a look inside a $12,500-a-year underground wellness club featuring only the 2nd Tracy Anderson studio in Europe

Surrenne

• Surrenne, a luxury wellness and longevity club, has just opened in London's Knightsbridge.  
• The four-floor subterranean space features a gold-leaf ceiling, a snow shower,  and the UK's only Tracy Anderson studio.
• You can apply to be a member for $12,500 a year. If that's not in your budget, here's a visual tour through the elite space. 

In April a new luxury wellness and longevity club sprung up in London's affluent neighbourhood of Knightsbridge.