AdExplore the RhineRiver's Historic Treasures and Natural Beauty on a Viking RiverCruise. Rhine Getaway: Book a Viking All-inclusive 8-day Voyage w/ Reduced International Airfare.
Basel, also known as Basle, is a city in northwestern Switzerland on the River Rhine. Basel is Switzerland's third-most-populous city, with 177,595 inhabitants within the city municipality limits. The official language of Basel is Swiss Standard German and the main spoken language is the local Basel German dialect.