This article defines the ‘Church Architecture’ with its genera which was introduced by the British government to the Subcontinent. This architecture is a significant part of the cultural heritage and British Archaeology of Pakistan. ‘Church Architecture’ is still a center of attention for the general public and the Christian community in Rawalpindi, Punjab, Pakistan. These “churches” were not only religious buildings of the British era but have always been the political and religious epicenters of British authorities. When the British East India Company was expanding its trading activities all over the subcontinent before 1849, simultaneously, ‘Company’ was trying to achieve the political and religious agenda of the British authorities. With combat skills, this trading company was able to meet the existing Sikh ruling powers on the battlefield, and the ‘Regime Change Operation’ ended, and the ‘British Era’ of architecture and supremacy emerged in Rawalpindi, Punjab Pakistan.