Humayun’s Tomb in Delhi was declared a UNESCO World Heritage Site in 1993 and since then has undergone extensive restoration work that aimed at the revitalization of the architectural spirit and original intention of the builder. It provided suspense-packed discussions and required a critical dialogue with architectural preservation in India as an originally colonial discipline. The conservation was based on prevalent international charters but was to be “rooted in the Indian context.” The following text presents the monument’s historical background and an on-site debate between several experts in the field of conservation who met at the mausoleum in November 2009 to talk about contested notions like architectural “character” and “material authenticity.”