 Lower Greenville is a major entertainment district in Dallas south of Mockingbird Lane containing many popular bars, restaurants, boutique stores and live music venues.In the early 20th Century, Greenville Avenue was one of the most important roads in Dallas, serving the new residential areas in East Dallas and playing the part that the North Central Expressway (US 75) plays today.Before the construction of the North Central Expressway in the 1950s, Greenville Avenue was the main route from Northern Dallas into downtown, with the H&TC railroad occupying the current location of North Central Expressway.