The Garden Çlub of Stony Brook decorated the dining room in the official governor’s mansion as part of the New Jersey Garden Clubs’ annual “Holidays at Drumthwacket” open house. Clubs from across the state have bedecked nine locations around the house with festive holiday decor. Visitors can take self-guided tours on December 6, 10, 13, and 20, between 11 a.m. and 1:30 p.m. Admission is free, but reservations are necessary. The house, at 354 Stockton Street, is wheelchair accessible. Reserve at drumthwacket.org/visit/.