Now in its second year, the Holiday House Hamptons, an annual summer-entertaining-themed design show benefiting the Breast Cancer Research Foundation (it’s the Hamptons extension of Iris Danker’s NYC-based Holiday House, founded in 2008), will feature work from 16 leading interior and landscape designers, including Vicente Wolf, Campion Platt, and West Chin Architects and Interior Designers, from June 29 through August 10.

Presented by Hamptons Cottages & Gardens, the show will also preview three apartments—a penthouse loft, a townhouse, and a bungalow— within the iconic Watchcase factory (15 Church St., nr. Sage St., Sag Harbor;  631-725-7200 ) before construction concludes at this luxury condo building. General admission is $35.