Coastal Maine Botanical Gardens is a botanical garden in Boothbay, Maine. It was opened in 2007. The gardens have been named one of Maine's top attractions. Its gardens and landscape include nearly a mile of tidewater shoreline. Today, as the largest botanical garden in New England, the gardens comprise 295 acres (119 ha), 17 of which are gardens featuring native plants of Maine and other plants suited to northern coastal conditions. Yearly, the gardens see on average 200,000 guests from throughout the United States and (in 2018) 63 foreign countries.