Staying under the remarkable dome of the store you can imagine how historic tour of the Galeries Lafayette may be interesting. From the official site: This tour will describe the commercial revolution of the 19th century, which gave rise to the birth of the department store, the beginnings of Galeries Lafayette and how it has developed since 1894. You will discover the secrets of its construction, step by step, from the ground floor to its panoramic terrace, and including the neo-byzantine dome that was inaugurated in 1912. The grand foyer, with its famous Dome, adorned with coloured glass and ironwork, marks the beginning of the historic relationship between the company and design. You will be invited to look at the history of Galeries Lafayette with fresh eyes, and at the architectural features that make it an Art Nouveau monument in Paris, admired by thousands of visitors for over 120 years.