Did you know Sioux City has nearly two miles of enclosed skywalk? No matter the season, the skywalk system can turn into the perfect indoor adventure; a chance to explore downtown from a completely different perspective while staying comfortable along the way. Originally built in the 1970s and expanded over the years, the skywalk is climate-controlled and designed to connect downtown buildings, hotels, offices, and attractions. Today, the system stretches nearly 2 miles across 10 downtown blocks