The San Antonio River Walk (also known as Paseo del Río) is a network of walkways along the banks of the San Antonio River, one story beneath the streets. Only pedestrian traffic is allowed as the River Walk winds and loops under bridges lined with restaurants and shops. One popular entrance to the River Walk is across the street from the Alamo. At night River Walk comes alive with multiple colors and reflections. This pictures captures some of the dancing lights while passing through a tunnel on the river cruise with a long exposure (3.2s at f/6.3).