Biel/Bienne (official bilingual wording; German: Biel [biːl] ; French: Bienne [bjɛn]) is a bilingual city in the Canton of Bern in Switzerland. With over 55,000 residents, it is the country's tenth-largest city by population. The Biel urban area has a population of around 100,000 inhabitants. Biel/Bienne is the capital of the Biel/Bienne administrative district. The city has been an industrial and watchmaking heart of Switzerland since the 19th century. With world-famous watch brands such as Rolex, Omega and Swatch based in Biel/Bienne, the city is one of the main centres of the Swiss watch industry and is also referred to as the "world capital of watchmaking".