By the decree of October 8th, 1901, signed by Emperor Wilhelm 11, the status of town was conferred on Sopot. This fact inspired the municipality to put forward some new initiatives which would increase the prestige of the new town. First of all the authorities took every opportunity to buy property from its previous owners and in this way in 1904 the town acquired what had been the possession of the family of Count Przebendowski as well as purchasing the grange of Karlikowe in 1910. Unfortunately, due to the lack of resources for extensive repairs, Ludwik Gralath's mansion built here in the place of Kömer's historical manor, was pulled down. Soon the principles of town - planning were introduced to finish the period of chaotic building. The municipality also decided to construct new and representative edifices which would reflect the wealth of the guests and visitors of this then very elegant and fashionable holiday resort.

The majority of those new buildings, today architectural monuments, were designed by Paul Puchmüller, a town architect. In 1903 he built the Pavillion of Northern Baths, which was replaced by a new construction in 1972. Then in 1907, inspired by Scandinavian architecture, Puchmüller built a pavillion of Southern Baths, very much different from the previous one. More important, however, are his subsequent realizations as, for example, a modern bathing establishment built in 1903-1904. Here he cooperated with Dunkel, an architect and Fenzloff a sculptor, who made the original decoration of the two portals and, most probably, the modernistic arrangement of the vestibule interior. Yet another of Puchmüller's works was the town hall, slightly heavy in its form, built in 1910-1911 and extended in 1923. In the years 1910-1912 the architect was also involved in building the third bathing establishment designed by Wagner, a professor of the Gdańsk Technical University and built by Kohler. The interiors of this Kurhaus of Sopot were richly decorated and the splendour of its theatre hall drew general admiration. However, the place did not enjoy great fame due to the fact that a casino was opened here in 1920 in order to supply the impoverished municipal treasury after World War I. What remainded from the building - some ground floors, a terrace and a pavillion overlooking the pier and the sea, played an important part in the post-war history of Sopot as a place well known in Poland for its exhibitions and modern art festivals, some of which were significant artistic events. Another large edifice in Sopot is the Grand Hotel, completed in 1927 and situated not far from the pier on the edge of the beach, where it has always played an important utilitarian as well as representative role. Sopot's second casino has recently been opened there. Sopot's fame has also been enhanced by the Forest Opera, which was initiated by Paul Walther-SchAffer, the conductor of the City Theatre Orchestra of Gdańsk.