I once saw a documentary on the artist "Kristo". This is the guy that specializes in draping skyscrapers and geological formations with enormous pink plastic sheets. I've always felt art should be something that takes great skill and effort to do, and which has a great emotional impact on the audience.

The film showed how Kristo and his wife "draped" a large section of coastline, miles of it, in fact.
He worked for months, getting the permits, permission from property owners, lobbying civic and government agencies, hiring contractors, and (most important) raising an enormous amount of money and volunteer workers to get the materials and equipment and do the actual installation.

After the coast was draped, with minimal environmental damage, and the plastic was up for some time, he cleaned up the mess and restored the land to its original condition. The whole episode was pulled off because he made it happen, and everyone got to see the finished product.

I realized he had successfully accomplished a complex task that required great skill, and produced, in me at least, intense admiration for his management and persuasive skills.
It was indeed art after all, even by my own definition.

I wonder if maybe the Pyramids or the Parthenon were built the same way...some artist just decided he wanted to make it happen.