Dubuque is an Iowa city on the Mississippi River. The National Mississippi River Museum and Aquarium explores life in and around the river. Northwest, the Dubuque Arboretum and Botanical Gardens include rose, herb and Japanese gardens. Mathias Ham House is a 19th-century mansion with opulent furnishings, with an 1833 log cabin on its grounds. South, the Mines of Spain State Recreation Area has trails and wildlife.