Enjoy the beauty of luxembourg with a city sightseeing bus tour visit the palais grand ducal and during summer months you can also book a guided tour and admire jewellery and art exhibits within the building the recently restored building is a 16th century structure which is the city residence of the grand ducal family hop off and visit the art moderne grand duc jean opened in 2006 this impressive building cost 90 million euros and offers 6000 square metres of exhibition space here you c