Donaldsonville is a city located in Ascension Parish, Louisiana. It serves as the parish seat and is situated along the banks of the Mississippi River. Founded in the early 19th century, the city has a rich history and is known for its historic architecture and cultural heritage. The city is also recognized for its proximity to various natural attractions, including the nearby Atchafalaya Basin. Donaldsonville hosts several annual events that celebrate its local culture, such as the Donaldsonville Mardi Gras festivities. The community is characterized by its friendly atmosphere and diverse population.