base, Young's has a global sourcing operation supplying 60 species from 30 countries. Traditional Grimsby smoked fish was awarded a Protected Geographical Indication (PGI) in 2009 by the European Union. The traditional process uses overnight cold smoking from sawdust in tall chimneys, roughly square and 10m high. Other major seafood companies include the Icelandic-owned Coldwater Seafood, employing more than 700 across its sites in Grimsby; and Five Star Fish, a supplier of fish products to the UK food market. The £5.6 million Humber Seafood Institute, the first of its kind in the UK, opened in 2008. Backed by Yorkshire Forward, North East Lincolnshire Council and the European Regional Development Fund, it is managed by the local council. Tenants include the Seafish Industry Authority and Grimsby Institute and University Centre. Greater Grimsby is a European centre of excellence in producing chilled prepared meals, and the area has Europe's largest concentration of cold-storage facilities. Docks The Port of Grimsby has been in use since the medieval period. The first enclosed dock, later known as the Old Dock, was built in the 1790s by the Grimsby Haven Company. Major expansion came with the railways and construction of the Royal Dock, Grimsby in the 1840s. A Fish Dock was added in 1857, and the fish docks expanded over the next 80 years. The Old Dock was expanded to form Alexandra Dock in the 1880s. The Kasbah is a historic area between the Royal Dock and Fish Dock marked by a network of streets that remains home to many artisan fish-processing businesses. Fishing activities were reduced to a fraction of former levels in the second half of the 20th century. The current port has become a centre for car imports and exports, and since 1975 for general cargo. In the early 21st century, it has developed as a wind-farm maintenance base. Retail High-street shopping is grouped in central Grimsby between the railway and River Freshney, where Victoria Street acts as a central pedestrianised shopping street with an undercover Freshney Place centre to the north. Freshney Place is visited by 14 million shoppers a year and employs over 2,000 staff. The centre houses over 100 stores, including Marks and Spencer and House of Fraser. Constructed between 1967 and 1971 in a joint venture between the old Grimsby Borough Council and developers Hammerson's UK Ltd., it was known as the Riverhead Centre (so named as the development