Belgium is a country located in Western Europe and is bordered by the Netherlands, Germany, Luxembourg, and France. The port cities of Belgium are Ostend, Antwerp, Ghent, and Yser. Ostend is a coastal city located in the province of West Flanders and has a population of around 70, 000 people. Antwerp is the second largest city in Belgium and is located in the province of Antwerp. It is known for its diamond industry and is home to the world's second largest port. Ghent is a city located in the East Flanders province and is known for its medieval architecture. Yser is a river located in the French-speaking region of Wallonia and is a tributary of the Scheldt River.