Their riverfront park is a pleasant place to be, especially if the large freighters are nearby, and the view of the Detroit skyline is outstanding. This collection of parks is now one park, but at one time was several that blended seamlessly together. It goes by many nicknames, such as "Riverwalk", "Riverfront Park" and the "Riverside Park". The parks were gradually converted from numerous rail yards into one long connected park, 3 miles (5 km) long, from the foot of the Ambassador Bridge, to Hiram Walker's Canadian Club distillery. Although the vast majority of the park allows people to fish along its edge, doing so isn't recommended due to the pollution of the Detroit River. Caution must be taken while riding a bicycle along the Riverfront trail, due to young children, crowds of people walking, occasional sharp curves of the bike trail, and the large amount of Canadian Geese and other migratory birds that rest and walk along the parkland and trails. Because of this, a city-posted speedlimit of 20 km/h (12 mph) is in effect on the trail.