The Watts Towers are one of the most famous works of folk art in the U.S., made up of 17 steel and mortar sculptures built between 1921 and 1955 by Italian immigrant Simon Rodia. The towers rise as high as 99.5 feet and are entirely covered in “a diverse mosaic of broken glass, sea shells, generic pottery and tile, a rare piece of 19th-century, hand painted Canton ware and many pieces of 20th-century American ceramics.”
When he was done, Rodia said, “I had it in mind to do something big and I did it,” and he deeded the property to a neighbor and moved away. After his house burned down, a group of neighbors banded together to save the towers, eventually founding the Watts Towers Arts Center; the site is now run by the city and is on the National Register of Historic Places. You can take a guided tour or just go yourself to see what Simon Rodia created.