During the Audubon Pilgrimage (the third weekend in March), costumed docents guide special tours at Rosedown Plantation Historic Site , but you can also visit year-round. Daniel and Martha Turnbull’s 1835 plantation house still contains many original mid-19th century furnishings. The formal gardens have been meticulously restored based on Margaret’s garden diaries. Be warned: Rosedown is a major stop on the tour-bus circuit.