If you like sightseeing, Switzerland is the perfect choice. First of all, because you will find there many perfectly preserved monuments from various historical periods. From medieval castles (eg. Vaud on Lake Geneva) to slightly more contemporary structures, to modern architecture. You will be able to admire the latter in particular in Geneva . A huge number of interesting museums are waiting for you in Basel (there are about 40!). It is also worth visiting Bern , picturesquely situated on the Aare River, or Lausanne - the only Swiss city with a metro line.