In the project submitted to the national competition opened by the Governorship of Hatay, a transparent public building inviting people into its luminous and spacious interiors was aimed. The building was designed to have minimum number of floors and the layout plan was developed in a way that the grown trees on the plot are not affected. The whole plot was opened to the public use as a recreational area by covering the building with a green roof with a walkable slope starting from the ground. The office spaces were lined up next to each other within a depth of maximum 8m, and a gallery space of 10m width was created in between, in order to benefit from natural lighting, as well as cross ventilation. An “inner street” accessible by multiple entrances was created with the wide corridor on ground floor spanning under the gallery space. Unity of inside and outside was achieved by the transparent façade alongside the inner street. Natural stone that is widely used in the vernacular architecture of the region was preferred as the main cladding material. The building mass becoming part of the topography was underlined by using natural stone on both the façades and the floors. The existing concrete water tower was structurally enhanced with steel and turned into a sightseeing platform, as well as a point of reference on the way approaching the city center.