Advertising fields

Any place is good to advertise our products or services.

Since a long time ago, classical advertising channels (ATL) are not the only option for let us to be known, in fact, in a society highly exposed to advertisment messages, the best way to get our message to be the most effective as possible is fleeing from these conventional channels and looking for originality, which is already 

being used for the techniques of guerrilla and other forms of communication outside of common (BTL).

Today I want to highlight one of these new channels of advertising, which already exists in many countries but is now being proposed and studied to take place around the airport of Barcelona: crop's fields as a new channel for advertising messages. Smart, don't you think? We all have ever flown in an airplane and always or almost always we tend to look outside the window, specially when we are taking off or landing.

We look at the surface of the earth that we have under us ...

What could be better for a company that millions of travelers who fly each year to a destination X, can put their eyes on their ads? 

I leave some examples I found online. Enjoy it!