The Port of Dubuque (also known as the Ice Harbor, 4th Street Peninsula, or the Riverfront) is the section of downtown Dubuque, Iowa that lies immediately adjacent to the Mississippi River. The area was among the first areas settled in what would become the City of Dubuque, and the State of Iowa. Historically, the area has been a center of heavy industry, but has recently seen extensive reinvestment and new construction. The area is now one of the main tourist destinations in Dubuque, as well as Iowa.