One of the Grand Duchy's most popular tourist attractions, the 'Bock
Casemates' in Luxembourg City, opens once again to the public on
Saturday after being closed for the winter months.
the UNESCO World Heritage List, the labyrinth of underground galleries
are monuments to the ancient fortress city and unique in the world.
30 March to 16 September, guided tours of the Casemates will also be
offered three times a day in various languages, including English.
In 2017, more than 136,000 people visited the Casemates du Bock, making it the capital's most popular tourist attraction.