Columbia is located in Caldwell Parish, within the Sportsman's Paradise Region, between Monroe and Alexandria along US Hwy 165 near Grayson, Clarks, and the Ouachita River. The Schepis Museum and the Ouachita River are it's main attractions.<br> A recent addition to the Columbia landscape is the Riverwalk Gateway, at the top of the levee at the end of Main Street. The Gateway and the steps below it allow access to the boat dock, and beckon traffic both on the river and US 165. The Gateway area has now been enhanced by the Ouachita Riverwalk, that extends for about 1500 feet along the top of the levee. It is the beginning of a scenic trail that will lead for several miles along the river from a trailhead being developed just upriver from the US 165 bridge. The gateway proudly displays Old Glory, as well as French and Spanish historic flags, the flag of the Confederacy (the real one, not the more widely recognized battle flag), and the flags of Caldwell Parish and the Town of Columbia.