The textbook "Seismic Protection of Reinforced Concrete Structures" offers a comprehensive analysis of the seismic isolation of reinforced concrete buildings. It highlights the advantages of this modern technique compared to traditional approaches in earthquake engineering, which often aim for controlled damage. By applying seismic isolators, particularly sliding pendulum isolators with nonlinear behavior, the ability of structures to maintain their functionality after a strong earthquake is demonstrated. A real case study illustrates the effectiveness of this method, making the book a valuable resource for professionals and students in the field of civil engineering. The authors, Marinella Fossetti, Gianvito Di Stefano, and Marcello Merlino, contribute their expertise in mathematics and natural sciences to explain the theoretical foundations and practical applications of seismic isolation.