Bern (or Berne, the official English spelling) is the capital of Switzerland. It is a smallish city with a population of about 130,000, surrounded on three sides by the meandering River Aare. Bern has long been a firmly Protestant city. The main language spoken is Swiss-German. English is supplanting French as the favorite second language of the Bernese, but both are widely spoken, especially as the Bern canton is officially a bilingual canton (German and French), and Bern itself is only 12 km from the nearest French-speaking village. The remarkably harmonious design of the Bern's old town, brimming with beautifully preserved 14th- to 16th-century architecture, has earned it a place on the UNESCO World Heritage List. The old town features four miles of pleasant arcaded walkways along streets dotted with fountains and clock-towers. Bern's 15th-century Gothic Cathedral of St. Vincent is magnificently decorated inside and its tower provides a sweeping vista of the city.