The report analyses the perception of ideas of Andrea Palladio in the architecture of classicism. The field of private residential and civil construction is one of the key matters in infiltration of the master’s creative heritage in the architectural language of the Enlightenment. The search for a new type of organization of space can be traced both in suburban palaces and in town hotels. Achievements of the French classicist architectural school in this area must be examined on the material of both realized and unrealized projects.
A rotunda gradually became a mandatory element in residential buildings. In French architecture central circular space of the edifice was called “Italian salon”. However, in Russia such salons were called “Halls of Louis XVI”. Numerous reproductions of examples of French neoclassicism in Russian architecture were accompanied by duplication of the construction of round salons. The report discusses the examples of the most significant projects in this area. The study of theoretical works, treatises, educational projects and certain buildings explains the evolution of the character and causes of the spread of these forms and structures in the architecture of French neoclassicism. This demonstrates the mechanism of infiltration of such planning ideas in Russian architecture of the Age of Enligh­tenment.