Set atop the Residences at the Mandarin Oriental, One Hyde Park Penthouse is a crown jewel of one of London’s most luxurious neighborhoods. The 18,000-square-foot duplex offers a two-story reception room with a custom two-way fireplace and floor-to-ceiling windows that wrap the space in views of Hyde Park. Of the five bedrooms, the main suite features dual dressing rooms and bathrooms fully lined in marble, while a Japanse-inspired kitchen with a 750-bottle wine room, cocktail bar, private spa with sauna and steam room, fitness studio, home cinema, and two outdoor terraces make up the rest of the condo. The apartment also includes four secure underground parking spaces, four storage units, two secondary/staff entrances, and a separate staff suite.