Have you seen any of these art projects that are done by street artists? They come in and usually use sidewalk chalk to draw 3D pictures on the street or sidewalk.
They are amazing, and usually cover about 20-30 feet. The pictures below show paintings that cover the length of a street!
These are painted by Edgar Mueller.
This one is called the Great Crevase. Together with five assistants, Mueller painted all day long from sunrise to sunset. It was painted on the East Pier in DunLaoghaire, Ireland.
This one is named Flash Flood. It was done in Saskatchewan, Canada.
I think this is my favorite. It's called Lava Burst and was done in Geldern, Germany. I can't believe the amount of detail in this and the way they parked the cars in just the right spot adds to the illusion. This one is also the longest one, you can see how it goes all the way down the street! Amazing!
This one is named Flash Flood. It was done in Saskatchewan, Canada. 
I think this is my favorite. It's called Lava Burst and was done in Geldern, Germany. I can't believe the amount of detail in this and the way they parked the cars in just the right spot adds to the illusion. This one is also the longest one, you can see how it goes all the way down the street! Amazing!
