which is the most beautiful city in luxembourg?
['Clervaux is home to a UNESCO-registered photography exhibition © PBstock / Alamy Stock Photo. ... ', 'Ettelbruck in Luxembourg is built on the intersection of three rivers © Pixel62 / Alamy Stock Photo. ... ', 'Diekirch is filled with quaint streets, village shops and donkey motifs © Peter Forsberg/EU / Alamy Stock Photo.']