This Master Thesis deals with the former Adensamer Textile Factory in Groß-Siegharts in the Lower Austrian Waldviertel and is divided into three sections: historical background and analysis, a reuse concept and a design project. The factory was founded in 1847 and finally closed in 2000 after the founding family had sold it in 1990. Since then the building has been vacant. It is primarily characterized by its central location in the town of Groß-Siegharts and by its size of a built-up area comprising around 9 000 m2;. The regional history of the textile industry ranges from the aristocratic foundation of a so-called "Tuchwalke" in 1725 in Groß-Siegharts to the regression of the textile industry in the northern Waldviertel in the 1990s. As the Adensamer Textile Factory was the biggest ribbon factory in the Austro-Hungarian Monarchy, it is of historical value. The thesis outlines the architectural history, which was reconstructed from plans and literary sources, and is connected with the company-s history. The chapter is followed by a description of the building with regard to the construction's present condition. The documentation of the building includes the complete measurement of the factory and created current stock plans. Due to the considerable number of construction faults they are summarized in an additional chapter. The description of transport and social infrastructure are to be regarded as a baseline study for the concept of reuse. The second section of the thesis presents opportunities for reuse scenarios. The concept is initially based on the method of intermediate use and a mixed use to revitalize the area, raise awareness and change the perception of the population is intended. From 2025 onwards the scenario is divided into four different variations. On account of selected reference projects, the scenarios are realistic. In the course of the research on the revitalisation of vacant buildings a separate chapter on strategies of reusing industrial sites evolved. On the one hand the reasons for the increasing number of abandoned industrial sites are summarized and on the other hand the chapter lists the reasons for preserving them. Since the strategy of intermediate use is important for the reuse-concept of the Adensamer Textile Factory, the advantages and disadvantages are pointed out and the duties of the people involved are explained. Finally, the design project exemplifies possibilities of implementing the reuse-concept to prove the building's flexibility in terms of functions. Since the building is not classified as a historical monument, the historically valuable parts of the factory should be defined and distinguished from the parts that could be demolished. In order to reintegrate the factory in the town structure, the future access and the paths through the area are dealt with. The escape route of the building has to be provided and is elaborated in the design project.