Abstract: This article examines the American expatriate community in Florence, Italy, between 1840 and 1865. Florence, with its history of liberalism, attracted reformers from all over the Atlantic world, including many Americans and Britons committed to antislavery. During the two decades before the Civil War, Florence attracted American and British cultural elites who valued its history, culture, cosmopolitanism, and suitability for untrammeled discussion and debate about a variety of liberal causes, including antislavery. For American reformers and intellectuals like Ralph Waldo Emerson, Charles Sumner, Theodore Parker, and Sarah Parker Redmond, the city represented both a physical location and an imagined community dedicated to antislavery and liberal reform. American abolitionists’ interaction in Florence with English abolitionists such as Robert and Elizabeth Browning and Fanny Trollope suggests that the city looms larger in the geography of nineteenth-century abolitionism than previously appreciated.