Tucked into the Engadin valley near St. Moritz, the seven-level Lonsdaleite estate is a modern-day castle that overlooks the Swiss Alps. Development of the property took five years, says Senada Adžem, listing agent and executive director of luxury sales at Douglas Elliman. Because of the home’s location and design—part is embedded in the mountain—construction wasn’t feasible during the winter.
At nearly 43,000 square feet, Lonsdaleite is a portrait of sharp geometric lines and neutral tones. The entryway leads to the grand reception, where 35-foot floor-to-ceiling windows frame the Alps and mink covers an entire wall opposite the two fireplaces. Off the reception, crushed red velvet lines the library walls, which conceal a secret office.
Though elegant, a surprising dash of playfulness permeates the contemporary space. Designed to look like a cracked egg, the breakfast nook features rounded ceilings with an accent wall covered in 24-karat gold leaf and a $145,000 custom egg-shaped chandelier.
A glass staircase leads to five en suite bedrooms, each featuring walls covered in Loro Piana cashmere and bathrooms finished in rare stone. An entertainment lounge offers 178 floating Swarovski-crystal candles strung from a gold-covered ceiling. An elevator tops out at the master suite, which comes complete with a white Scandinavian fox-fur rug and a white-onyx master bath.
The estate also includes a wine cellar, cinema, spa (Himalayan salt room, hammam, sauna), and an underground pool and Jacuzzi beneath a ceiling of Venetian artwork. There is a ski den—with direct outdoor access to the slopes and a private chairlift—and a six-car garage with a turntable to facilitate smooth arrivals and exits. ($185 million).