There are 376 hidden Mickeys at Disney Land.
More info: Hidden Mickeys started out as inside jokes among the Walt Disney Imagineers. A Hidden Mickey is an image of Mickey Mouse concealed in the design of a Disney attraction (ride, resort, etc). Imagineers subtly "hid" Mickey Mouse silhouettes in plain sight. Soon, it became a tradition, and as the word spread, Disney fans everywhere went on the search for them in Disney movies and theme parks.