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.
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Types: Skip The Line Tickets, Museum Tickets, Day Tour, Guided Tours, Bus Tours
The most venerable and polished of the tour-and-activity sites. – BBC