Villa Müller, a gem of modernist architecture, is nestled in the residential district of Střešovice in Prague, Czech Republic. Designed by renowned architect Adolf Loos and his assistant Karel Lhota in 1930, it carries the legacy of Loos's unique architectural concept of Raumplan - a design principle that disregards traditional floors in favor of interconnected spaces of varying levels. The Villa was commissioned by František Müller, a successful civil engineer and his wife Milada Müllerová. Müller was a partner in the Kapsa and Müller construction company, which was known for its modern building techniques. Hence, the house was to reflect these modern methods and the Müller's social status. The exterior of Villa Müller is deceptively simple. It’s a boxy, three-story structure with a flat roof, made of reinforced concrete. The façade is adorned with opaxite glass, which was a novelty at the time, and the ground floor is decorated with green Irish Iona marble. A closer look reveals a distinct spatial layout that challenges the conventional perception of interior and exterior spaces. The interior, on the other hand, is a testament to Loos's passion for luxury and comfort. The Raumplan design principle is fully expressed in the interior, with the different rooms situated on different levels, creating a dynamic spatial experience. The rooms were designed according to their function and significance, with the most important spaces, such as the living room and the lady's boudoir, given the most attention. Every detail of the interior was carefully thought out, from the selection of materials to the arrangement of furniture. Rich wood paneling, plush carpets, and luxurious wallpapers create a sense of warmth and luxury. Each room has its own specific color scheme and ambiance to match its function. The Villa Müller is not merely a house; it is a symbol of modernist architecture that merges functionality with luxury. It was declared a national cultural monument in 1995 and is now a part of the City of Prague Museum. Visitors can explore this architectural masterpiece and delve into the history of modern architecture, experiencing first-hand the harmony between form and function that Adolf Loos envisioned.