Recently, several large-scale art installations have been popping up throughout San Francisco. Notably, the massive statue of a woman standing in front of the Ferry Building, called R-Evolution, and the large sea serpent in a Golden Gate Park pond.
The installations are part of an initiative called the Big Art Loop, which is a 34-mile loop surrounding San Francisco, filled with public art installations. The exact route of the loop has not yet been determined, as future placements for art installations have yet to be determined.

The project is organized by The Sijbrandij Foundation, with the goal of installing 100 large-scale public art installations throughout San Francisco. The installations will span three years, and every sculpture will be at least 10 feet tall or wide. All the artworks included in the loop are already existing pieces looking for their latest home. As a result, you may recognize some of the installations, which have previously been shown at events like Burning Man.
The art is selected through an open call process, and then the foundation works with various city agencies to select the artworks. So far, there are 20 artworks on view across the city, with more installations expected soon.
You can find a map with the locations of all the current artworks on the Big Art Loop website.