The Dubuque Arboretum and Botanical Gardens 52 acres (210,000 m2) are an arboretum and botanical gardens established in 1980 and located at 3800 Arboretum Drive, Dubuque, Iowa. It is open, without charge, daily (from dawn to dusk) throughout the year. The arboretum is the largest in the United States staffed entirely by volunteers. (About 300 community volunteers help maintain the gardens.) The Arboretum is a popular spot in the community for outdoor weddings and is also a venue for musical entertainment during the summer months (Music in the Gardens, 6:30p Sunday evenings).