OPENING DAY AT FOSTERFIELDS LIVING HISTORICAL FARM. Opening Day at Fosterfields Living Historical Farm Experience farm and domestic life during the early 20th century. Meet the resident farm animals, help with chores, reserve a tour of The Willows, and discover the interactive Transportation Exhibit. Time: 10 a.m. - 5 p.m. April 1 - June 30. Open Tuesday - Saturday. Closed Sunday and Monday. Last admission to the farm is 4 p.m. Cost: Admission to the farm and The Willows is $6 per adult, $5 per senior (65+), $4 per child age 4 - 16, and $2 per child age 2 & 3. FREE per child under age 2, and Friends of Fosterfields and Cooper Mill members with a current membership card. Special event fees may apply to certain programs.