I was fortunate enough to live in Brussels when they had famous Brussels Flower Carpet. Every two years, almost all of the Grand Place of flowers is covered, so that it makes a colorful and spectacular sight. The Belgians and tourists enjoy the flower show in midsummer for a few days in August. If you climb to the top of a building you can see the whole picture. I think next year is the next time so sign up!!! I was fortunate to be living there, rather working in Brussels the last time the famous Flower Carpet was installed. As I have understood, this party-show is held every two years in summer.