In October of 1923, Roy Disney teamed up with his brother to finally incorporate his fledgling cartoon studio and setup an actual office. (Up until this point, Walt Disney had been working out of his uncle's garage) The first offices were at 4651 Kingswell Avenue in Los Angeles.
Here are the boys posing with their wives and sister in front of their "studio":
This small office is where the brothers would begin building their empire, producing the Alice Comedies and Oswald cartoons out of this cramped building. The success of Mickey Mouse eventually afforded them the opportunity to move into larger quarters:
The company has come a long way since then and currently has properties around the world where it runs its various businesses and entertains millions. Today, the company's humble beginnings can still be seen in Los Angeles; the building that held their first office still stands, though it is a copy store today. A small tribute to the building's magical tenants hangs in the copy shop.