The Post Office had to be demolished the year before, after an order of the British government, because of its close proximity to the railway tracks.[3] In the first part of August, 1938, the completed dome had four concrete models - a Christian cross, a Hindu temple, a Muslim mosque, and a Zoroastrian fire - fitted onto the corners of the roof.[4] Shortly after, Swiss artist Helen Dahm painted colorful murals on the inside walls of the tomb, completing them in November 1938. The sign over the entrance bears Baba's motto, "Mastery in Servitude".