I know for certain about the fifth takhat 'Talwandi Sabo' which was added later in 1950s. Giani Gurdit Singh used to tell me how the idea of Fifth Takhat was floated and how he was one of the key persons to get it approved from Akal Takhat and SGPC. The main idea was to create a center for religious development in Malwa belt and Talwandi Sabo was considered as best since Guru Gobind Singh Ji had declared it as 'Guru ki kashi'; like Benaras (center of learning of Hinduism) the center of learning of the Guru's teachings. Now it has a Sikh religious institute for teaching and research in Sikh religion; three universities i.e., Gur Kashi University, Akal University and Central University. Even Maharaja Ranjit Singh Technical University and Adesh Medical University are not far (near Bathinda) though these universities except Akal University are not centered around Sikh religious teachings .