At the southwest corner of Central Park, Broadway crosses Eighth Avenue (called Central Park West north of 59th Street) at West 59th Street and Columbus Circle; on the site of the former New York Coliseum convention center is the new shopping center at the foot of the Time Warner Center, headquarters of Time Warner. From Columbus Circle northward, Broadway becomes a wide boulevard to 169th Street; it retains landscaped center islands that separate northbound from southbound traffic. The medians are a vestige of the central mall of "The Boulevard" that had become the spine of the Upper West Side, and many of these contain public seating.