Concepción is an important and hardworking port city that is best known for its universities and music scene (many of Chile's best rock acts got their start here). There are a few plazas and museums worth checking out, and Spanish-speakers will be rewarded with an energetic and youthful arts, music and culture scene. The city sits on the northern bank of the Río Biobío, Chile's only significant navigable waterway, about 6 miles (10km) from the river's mouth. The metropolis seems to go on forever, with an estimated 950,000 people living in the greater area.