Mint coining the blank and endangered plant and associated buildings have been converted into a campus-like headquarters of Historic Houses Trust. Forms of contemporary architecture has been carefully incorporated to accommodate a major public auditorium, exhibit area, living room and bar, while the existing buildings have been adaptively reused to create a center of significant new resources for the community and the new working environment for staff. Mint project is the transformation of one of the oldest and most valuable sites of history at Macquarie Street Sydney to the newly formed public places and are marked as much by significant contemporary buildings carefully preserved and adapted to be included as a heritage structure. While has been carefully designed to establish a direct and clear relationship with existing buildings in terms of scale and proportion, without compromising their new. They have tried to create a new architectural layer on a site that is designed in an innovative and ‘forward looking’ spirit that supported the layer ‘approach constructions.This original 1850′s’ putting new and old in relation to changing the thickness seen in the general organization of the project and a new page design. Strict symmetry of the initial plan Trickett with the central pavilion and wings are identical has been transformed into an asymmetric axis of the associated pair, the pavilion of the ‘opposite / dialectical’ character, new and old, light and heavy, stone and glass. The result is a rich and complex assemblies form and space in which the layers and the events of the site can be read and interpreted.