Belle Isle Aquarium is a historic public aquarium located on Belle Isle at 99 Pleasure Drive in Detroit, Michigan, and holds the distinction of being the oldest original aquarium in the United States, having first opened in 1904. The facility showcases a diverse array of fish and aquatic species from around the world, offering visitors an engaging window into global marine ecosystems. Open Thursday through Sunday with free admission, the aquarium serves as an important educational and recreational resource for the Detroit community, making it an accessible destination for families and curious visitors of all ages seeking to explore the wonders of aquatic life.