High on a quartz mountain near Atenas, The Retreat Costa Rica - Wellness Resort and Spa looks across forested hills towards the Pacific. The adults-only property centres on restorative programmes, with light-filled rooms opening to balconies, gardens or wide valley views. A yoga shala, sauna, treatment spaces and pools support the wellness focus, while the restaurant uses nourishing menus shaped by local produce. White buildings and terraces are set into dense tropical planting, with the spa pool and open-air lounging areas following the slope rather than interrupting the mountain landscape.