New Additions to Existing Built Heritage and Their Contributions to Sustainable… DOI: http://dx.doi.org/10.5772/intechopen.82734

and adapted to a museum by Rahmi M. Koç Museum and Culture Foundation in 2012–2016. The upper level has been adapted for a restaurant with an open terrace. Regarding its contemporary exterior additions, Zağfiran Khan has a major side addition attached to its west facade and a rooftop addition above the central courtyard (Figures 8–10). New additions are clearly modern in their use of material, massing, and space arrangement. Rooftop architecture has a flat form built with glass and steel material (Figure 8). It creates a visual richness on the terrace of the restaurant and at the same time, enables permanent exhibition in the courtyard beneath. Side addition on the west side has similarly been created for various functional reasons, such as wet spaces, restaurant, and service halls for the stairs and elevators. Its facade is covered with glass material (Figure 9). Interior additions are mostly seen in west side addition, and in the old part, as door passageways and mechanical installations (Figure 11). In Zağfiran Khan, all those new additions exhibit present day appearance by means of contrasting style with

#### Figure 7.

Interior additions in Çengel khan are mostly observable at mechanical installations, handicapped lift, and door and window alterations and at designing wet spaces [39].

#### Figure 8.

Interior (a) and exterior (b) views of rooftop addition in Zağfiran Khan [39].

#### Figure 9.

Side addition of Zağfiran Khan; views from the restaurant, terrace (a), and whole south and west façade of the side addition (b) [39].

#### Figure 10.

Schematic plan drawing of Zağfiran Khan with new additions shown in different colors (source: Redrawn from [57]).

Figure 11.

Interior new additions of Zağfiran Khan; stairs, elevator, wet spaces, and newly added passageway between Çengel Han and Zağfiran Khan [39].

their material, color, and form, hence original and new parts can easily be differentiated from each other.
