Bailey Arboretum is a beautiful 42 acre property located on the North Shore of Long Island in Lattingtown, New York, situated on the estate of renowned horticulturist and philanthropist Frank Bailey. Bailey Arboretum is operated as a Non-Profit Organization that manages the day-to-day operations, the collection of rare and unique trees, charming 18th century farmhouse, flower beds, hiking trails and provides educational programming to the public and schools.