Check out this contemporary underground architecture, Sagaponac House – a 4,500-sq.-ft. two-volume home nestled in an eastern Long Island community, designed by architect Richard Meier of New York-based architecture firm TsAO & McKOWN. Above the land line this house is a modern, minimalist cube; beneath it this elaborate swimming pool house is built right into the landscape. The upper white cube is a light-filled space balanced atop the lower volume, which is connected to the pool area. Really, this cool house was made for parties, fiestas and soirees. Atop the buried volume, a rooftop patio is a sprawling space ideal for socializing in the sun. Interiors boast modern, glass-walled living rooms with tall ceilings and natural light. Each room offers views of the densely treed outdoors, and some even feature walkouts to al fresco entertaining areas and the pool.