Architecture has been the most fascinating area of interest ever since civilizations have existed. From the Mughal Empire to the Romans to Greeks to modern architecture, all have caught the imagination of the world. Construction of huge, imposing, strong yet beautiful buildings is as much as art as is science. It calls for operational excellence, great management skills, sustained training & skilled workforce to execute such marvels. Here are a few grand buildings of historical importance showcasing their images during construction and after completion.