On what register is the 17 interconnected sculptural structures in Watts, Los Angeles listed in?
Watts, Los Angeles:  It is noted for the Watts Towers, which are a Los Angeles Historic-Cultural Monument and also listed on the National Register of Historic Places. Watts Towers: The Watts Towers, Towers of Simon Rodia, or Nuestro Pueblo ("our town") are a collection of 17 interconnected sculptural structures within the Simon Rodia State Historic Park in the Watts community of Los Angeles.
National Register of Historic Places