From the Disney Parks YouTube Page:
Imagineers are busy putting the final touches on Buena Vista Street at Disney California Adventure park. This busy California street will take you back to 1923, when Walt Disney first arrived in California. Part of the décor includes colorful murals made of tiles that create a story, while also reflecting the architecture and the Spanish influence in California during the 1920s.
http://www.youtube.com/watch?v=VrAIgPEK5Q0