Oak Alley, located in Vacherie, Louisiana, is a favorite stop for the Mississippi River steamboats. The plantation house was built in 1837 in a Greek Revival style, and the massive two-story Doric columns spanning the front give it a particularly imposing presence. The most evocative view is with your back to the river facing the house along a quarter-mile canopy formed by 18th- century southern live oaks. Standing on the front porch and looking along the same canopy, you would not know the Mississippi River is there because of the impressive levee. When fog settles on the river, the “tunnel” takes on an eerie look.