The largest and main settlement in the area is Greenock. Traditionally dependent on heavy industry and manufacturing relating to the shipping trade, Greenock is now one of the largest centres for high technology and modern communications media in Europe. IBM, National Semiconductor, Amazon and T-Mobile One all have their UK or European bases in Greenock. Continued redevelopment of obsolete industrial land has resulted in a comfortable blend of Leisure and Retail services occupying the waterfront area. Greenock has excellent transport links, Clyde Port Authority operate one of the largest container terminals in Scotland which doubles as a busy Cruise ship terminal. The road links provide easy access to Glasgow International Airport (20 mins), Prestwick International Airport (45 mins), the main Caledonian McBrayne Ferry terminal in Gourock and regular freight and passenger Rail transport to Paisley (30 mins) and Glasgow (40mins).