From the beginning of first Gurus, Sikh places of worship were known as Dharamsalas. These places were created in the purpose to hear together the Guru’s discourses and sing hymns. As the Sikh population continued to grow, The sixth Guru, Guru Hargobind sahib introduced the word Gurdwara, meaning the gateway through which the Guru could be reached. Thereafter all Sikh places of worship came to be known as Gurdwaras. Any place where the Guru Granth Sahib is installed and treated with due respect can be referred to as a Gurdwara. Three main functions are carried out in all the Gurdwaras. The first one is the Gurbani Kirtan, which is the singing of hymns from Sri Guru Granth Sahib, another is the Katha, which means the recitation of Gurbani from Sri Guru Granth Sahib and its explanation. The third main function which is carried out at every Gurdwara is the Langar (free community kitchen) for all visitors of all religions regardless of their caste, creed or colour. Along with these main functions the Gurdwaras around the world also serve the Sikh community in many other ways including, libraries of Sikh literature, schools to teach children Panjabi in Gurmukhi script so as to enable them to read, understand and live up to the teachings of the Sikh Gurus and Sri Guru Granth Sahib, and the most important is the charitable work being carried out in every Gurdwara by the Sikh community around the globe.