This is truly amazing. In Brussel, Belgium they have replicated a medeival carpet using begonias. It includes close to a a million flowers and spreads out for 300 square meters. Grass, tree bark, and other materials were added to blend the colors. 1,000 volunteers are needed to put it all together.
In 1971, the first Carpet of Flowers was created in Belgium’s capital. Now, the carpet is recreated every two year. The next display will be created in 2010.
You can see photographs of the 2008:
Carpet of Flowers
Here’s a short video showing the volunteers hard at work: