A striking modern house in Bridgehampton designed by architect Timothy Haynes on a three-acre property with more than 350 feet of frontage on Sagg Pond is on the market for $29.95 million.

“It’s beautiful water frontage,” says listing agent Susan Breitenbach of The Corcoran Group. “The house itself was totally custom — designed with the high end of everything.”

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The 15,000-square-foot home has 30-foot ceilings and walls of glass overlooking the water, including a glass entrance surrounded by a reflecting pool. There are 10 bedrooms, including a master suite with his-and-her bathrooms, a sitting room, dressing room and terrace.

The house has storage for 1,800 wine bottles, and the property includes a heated gunite pool and spa, a pool house and an all-weather tennis court.