Raj's Old Office is one of the minor locations in The Big Bang Theory. Raj moves out of his office to Sheldon's old office to work with him.
Raj's office is filled with bookshelves that either involve with astrophysics, cabinets, a desk, a laptop, some whiteboards and a telescope.
Appearance in the series
In The Jerusalem Duality, only the outside of the office is shown where Raj ejects Sheldon from his office after Sheldon watched him work for ten minutes and then decided to design a piece of software that can replace him.
In The Griffin Equivalency, Sheldon, Leonard and Howard visit Raj in his office to apologize for not showing gratitude for his work. Then, Eric Gablehauser enters his office and promotes Raj to have lunch at the executive dining room.
Although the office is no longer seen on screen in the future episodes of the series, Raj moves out of his office to work with Sheldon. And the vacant office is now presumably owned by somebody else.