Denham Springs is a city in Livingston Parish, Louisiana, United States, and part of the Baton Rouge Metropolitan Statistical Area. Down town Denham Springs, has transformed itself from hardware stores, drug stores, doctor's offices, and a single movie theater to a collection of various and varied forms of antique dealers. The downtown area is now called the Denham Springs Antique village. Denham Springs has a Mardi Gras Parade held two Saturdays before Mardi Gras. Festivals include the Springfest, held on the last Saturday in April, and the Octoberfest, held on the first Saturday in October. Denham Springs is the largest area of commercial and residential development in Livingston Parish, and the only parish municipality classified as a city.