Answer:
naïve art
Explanation:
The Watts Towers, a collection of seventeen interconnected sculptural towers were designed and built by Simon Rodia, an Italian immigrant in watts, a neighborhood in southern Los Angeles, California. He built the structures, known as a National Historic Landmark for a period of 33 years starting from 1921.
The work is called an Italian-American naïve art, because it was built by someone like Simon, who lacks the formal training and education professional artists undergo