Mines of Spain State Recreation Area and E. B. Lyons Nature Center
Dubuque County, United States · built 1981
The Mines of Spain State Recreation Area and E. B. Lyons Nature Center is a state park located along the southern edge of the city of Dubuque, Iowa, United States. The 1,439-acre (582 ha) park features picnic areas, 16.5 miles (26.6 km) of walking/hiking trails, 3.5 miles (5.6 km) of ski trails, and the Betty Hauptli Bird and Butterfly Garden. It also includes archaeological sites of national importance as an early lead mining and smelting venture led by French explorer Julien Dubuque, as well as Dubuque's gravesite. These sites have been collectively designated a National Historic Landmark District as Julien Dubuque's Mines.
Park data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).