The fascinating and unique covered market, Chatta Chowk Bazaar, was designed for the fortress-palace, Redfort, the magnum opus of 17th century Mughal Emperor Shahjahan's new capital in Shahjahanabad, Delhi. This building was the subject of documentation and comprehensive qualitative studies, undertaken by architectural conservation students of School of Planning and Architecture in 2006-07. The direction and approach given by the conservation studio's faculty, one of knowledge systems, was significant in guiding the studies selected and the way the structure was analysed, resulting in an appreciation of the many dimensions of the historic building. These revealed architect Shahjahan's immense knowledge of architecture, qualified through primary studies of Mughal architecture in Delhi including the palace-complex and secondary studies of his other projects. This paper attempts to illustrate, through this case, how superior structural know-how and stability, are integral to a significant historic building, which is a knowledge system, and how an essential consequence of such significance, is safety.