The Wilson Building is a historic 8-story building in the Main Street district of downtown Dallas, Texas. The building was completed in 1904 and patterned after the Palais Garnier in Paris, France. The historic structure fronts Main Street on the south, Ervay Street on the east, and Elm Street on the north. The Wilson building was the tallest structure in Dallas from 1904–1909 and was considered the premier commercial structure west of the Mississippi. The Wilson Building is situated across from the flagship Neiman Marcus Building and is adjacent to the Mercantile National Bank Building.