Homeowner Mary Clair Collins opens up the doors of her contemporary house, which is located on 2.7 acres of lakefront property. Designed with an unusual piano-shaped silhouette, the 1,100-square-foot domicile features six bedrooms, six-and-a-half baths, an elevator and a tram, which whisks you off to a private beach. For more information about this home, please contact broker Debbie Scully of Baird & Warner at 847.266.4743. This episode of Open House was hosted at 1150 5th Avenue, Apartment 10A, in New York City. Please contact brokers A. Laurance Kaiser IV at 917-859-3602 or Craig M. Dix at 917-567-0805 of Key-Ventures, Inc. for more information about this property.