On the verdant heights of Cologny, one of Geneva's most sought-after districts, Hauts-Crêts seventy-seven reveals a rare collection of three private mansions. These exceptional residences offer a precious living environment, combining discretion, sophistication and art of living.This architectural project is designed by Ateliers Jean Nouvel, under the direction of Pritzker Prize winner Jean Nouvel, in collaboration with DJAA Architectes. It embodies a contemporary yet timeless vision of private housing. True to his contextual approach, Jean Nouvel offers elegant, precisely sculpted architecture, conceived in constant dialogue with its environment.Designed to THPE standards, these villas combine energy efficiency and absolute comfort, meeting the highest sustainability criteria.Each mansion, with its generous volumes and clean lines, blends naturally into the gentle slope of the land, in perfect harmony with the surrounding vegetation. Carefully landscaped private gardens, light-filled terraces and wide windows extend the living spaces outwards, creating a peaceful, confidential atmosphere.The interior architecture is by Thierry Lemaire, a leading figure in French design. He infuses each space with a sober, sophisticated ambience, where noble materials, balanced volumes and an eye for detail create a coherent, warm and refined aesthetic.In the immediate vicinity of the village of Cologny, the Geneva Golf Club, the shores of the lake and the city center; Hauts-Crêts seventy-seven enjoys a privileged location between nature and city life.Three private residences. Two renowned names. An exclusive project designed for those seeking beauty, intimacy and sustainability.