Former government buildings aren't the typical setting for a luxury spa retreat, yet beneath the grand corridors of the Old War Office lies Guerlain Spa at Raffles London at The OWO, one of London's most impressive wellness destinations. The former Old War Office is home to the U.K.'s first and only sanctuary from the brand, which sits alongside Pillar Wellbeing, bringing time-honored beauty rituals and science-led wellness together under one roof. Spanning 27,000 square feet across four floors, the sheer scale is immediately impressive. Yet despite its size, the atmosphere feels like a cocoon. Pale wood, soft earthy tones and delicately carved floral motifs nod to Guerlain’s Parisian elegance, while soaring ceilings above the 20-meter swimming pool create an unexpected sense of openness. The partnership between Pillar Wellbeing and Guerlain is seamless and well-balanced, creating an experience that addresses both long-term health and immediate relaxation. While Guerlain draws on almost two centuries of French beauty expertise through its luxuriously scented facial and body treatments, Pillar Wellbeing complements the experience with a modern philosophy centered on movement, nutrition and recovery.
Access is available to hotel guests, residents and those booking spa experiences. For those wanting a long-term commitment, there are a limited number of available memberships, which includes gym entry, complimentary group exercise classes, pool access and more.