Thessaloniki is a Balkan region of Macedonia city in northern Greece with Ottoman, Byzantine, and Sephardic roots. The story of its past is one of the immigrants from other places. The majority for many hundred years. Spanish-speaking Sephardic Jews and Ottoman Turks made up the majority of the city's population, and they contributed to many facets of the city's growth. Unless one expressly knows where to seek its traces, this significant presence is no longer discernible. It is an obliterated past rather than one that has been hushed or wiped out. The architecture of the city has a lot to do with this loss; the city has been redesigned from scratch by ignoring its close history. This thesis researches to the building of a museum in the city that would also revive the lost architectural history.