As Newbies looking to get an overview of the city, we couldn't have been more pleased with Alex, our knowledgeable and entertaining guide, and James, the Houdini of bus drivers, who got us around tight corners, pedestrians, and drivers with ease. We especially enjoyed the top bus section view of the the city. Hopped off at the Navy pier for sightseeing and a meal, and the next bus came in a timely way to continue the tour. We highly recommend this tour.