Explore the area around Camping Mersch and answer the questions to discover the secret number.
Question 1: How many swimming pools are at Camping Mersch?
Question 2: What is the name of the river that flows through Mersch?
Question 3: How many bridges are there in the center of Mersch?
Question 4: How old is the Saint-Michel church in Mersch?
Question 5: What is the most famous gastronomic specialty of Mersch?