Buena Vista, the county seat of Marion County, was incorporated January 26, 1850. Buena Vista is the only incorporated municipality in the county. Originally known as Pea Ridge, the city was renamed in honor of a famous battle in the Mexican War.

The name “Buena Vista” is of Spanish origin that translates into “good view”. The city is named for General Zachary Taylor’s victory over Santa Ana at Buena Vista.