Mary's College and Convent, in its phase as The Renaissance Centre, has had local representative social significance for the community of the Blue Mountains, and for its continued use for commercial purposes. It has local social significance for its contribution to the character and identity of the streetscape of the immediate vicinity, and as a focal point for the wider Blue Mountains communities, and regional and international tourists and students. The place has potential to yield information that will contribute to an understanding of the cultural or natural history of New South Wales. Research into the history of the Mount St Mary's site reveals its earlier association with education through its use, by pupils from John Walter Fletcher's Boys' College, as a sporting area. The site is also the last remaining significant parcel of land remaining from James Henry Neale's grant by purchase in 1876, which contributes to an understanding of the pattern of subdivisions in and around Katoomba. The site is also significant through its associative importance for the Katoomba and broader Blue Mountains communities, as a significant topographical feature and aesthetically appealing landmark The expansive landscape of St Marys College and Convent is significant both as a designed landscape and as an archaeological landscape. The largely intact curtilage provides significant evidence of the designed official, religious contemplative and recreational zones associated with Roman Catholic institutions, once an integral part of such institutions. The site has the potential to yield further information about significant garden and design elements such as the elegant gazebo which is thought to have come from the demolished "Royal Palace Katoomba" formerly the Katoomba College for Boys which was built and operated by John Fletcher MA. The place possesses uncommon, rare or endangered aspects of the cultural or natural history of New South Wales. Mount St Mary's College and Convent has rare significance as a purpose built boarding college for young women, with a progressive academic educational focus set within a framework of Roman Catholic spiritual ideology. The Mount St Mary's site represents one of the last large parcels of land to survive the subdivision patterns resulting naturally from the urban development and expansion of Katoomba. Mount St Marty's is the only surviving example of such a college for girls and convent complex in the Blue Mountains. The place is important in demonstrating the principal characteristics of a class of cultural or natural places/environments in