Harvard Square Station is the starting point of the Red Line extension, which now extends four miles to Alewife, and replaced the 1912 station. Aboveground, pedestrian areas were landscaped and brick crosswalks were created between Massachusetts Avenue and the Harvard campus. The station itself is huge, with access to buses and trains on different levels. Vendors—fruit, flowers, paperback books, and T-shirts—lend an animation to the approach to trains and buses. Surfaces are tough but well designed—stainless steel encloses thick columns, brick alternates with granite to form a pleasing pavement pattern. Tile panels featuring works of art by Gyorgy Kepes and Joyce Kozloff do much to enliven wall surfaces.