In San Francisco, California.
A mobile by Alexander Calder at the San Francisco Museum of Modern Art.
A few interesting facts about Calder, courtesy of Wikipedia (of course):
- His grandfather sculpted the statue of William Penn at the top of Philadelphia’s City Hall.
- His father was a renowned sculptor as well, also with landmark works in Philly (among many other places)
- Calder graduated from college with a mechanical engineering degree.
Given his sculptor’s bloodline and his engineering training, it was pretty much a fait accompli he’d ultimately be best known for his kinetic works and very large steel sculptures, personifying the art of science and the science of art.