Archaeological heritage sites constitute an important factor for the economic and social life of many countries, the development policy came to emphasize the safeguard and the preservation of landscapes and natural or fabricated sites, against the attacks, which have impoverished the cultural heritage, this heritage which represents a historic imprint for future generations. In a world where tourism has become the leading industry on the market, sustainable tourism has found its place as a major player through the network of Internet travelers. Welcome, solidarity and conviviality are the order of the day, giving meaning to sharing. This «extra soul» has the capacity to enrich moments, places, attractions and heritage. Algeria contains archaeological sites, which are classified as world cultural heritage by UNESCO. Unfortunately, reality shows that most of these sites are left to deteriorate without any real intervention. Through this research work, it is a question of examining the problem of integrating the conservation and enhancement of archaeological sites in the context of producing sustainable tourism for the city of Annaba and for Algeria.

The aim of this article the reality of the informal sector in the Algerian city, and try to do a diagnosis of this important geographical and economic issue, has been chosen the category of informal trade in the city of Souk Ahras, and this is in order to highlight all aspects of this trade through its manifestations, circumstances, motives, causes, and the extent of its impact on the city s urban and economic, environment, especially as it has become a prominent manifestation of urban life and one of the Algerian factories that control the growth and construction of the city, and the source of this important in the creation of employment and informal wealth in the city, from our study of the reality of this informal sector at the level of the city Souk Ahras, we found that it is endemic mostly in the sector of the centre of the city as represents the most strong hierarchical level in the city in terms of radiation and vital attraction, as urban unemployment that characterizes the category of the official labor force is among the most prominent motives that led to the demand for this trade irregular.