half-year is 225 mm, and in the warmer half-year is 350 mm. On average, 167 days with precipitation occurs. Architecture and urban planning Szczecin's architectural style is due to trends popular in the last half of the 19th century and the first years of the 20th century: Academic art and Art Nouveau. In many areas built after 1945, especially in the city centre, which had been destroyed due to Allied bombing, social realism is prevalent. The city has an abundance of green areas: parks and avenueswide streets with trees planted in the island separating opposing traffic (where often tram tracks are laid); and roundabouts. Szczecin's city plan resembles that of Paris, mostly because Szczecin was rebuilt in the 1880s according to a design by Georges-Eugène Haussmann, who had redesigned Paris under Napoléon III. This pattern of street design is still used in Szczecin, as many recently built (or modified) city areas include roundabouts and avenues. During the city's reconstruction in the aftermath of World War II, the communist authorities of Poland wanted the city's architecture to reflect an old Polish Piast era. Since no buildings from that time existed, instead Gothic as well as Renaissance buildings were picked as worthy of conservation. The motivation behind this decision was that Renaissance architecture was used by the Griffin dynasty, which had Lechitic and West Slavic roots and was seen to be of Piast extraction by some historians. This view was manifested, for example, by erecting respective memorials, and the naming of streets and enterprises, while German traces were replaced by symbols of three main categories: Piasts, the martyrdom of Poles, and gratitude to the Soviet and Polish armies which had ended the Nazi atrocities against Polish citizens. The ruins of the former Griffin residence, initially renamed "Piast Palace", also played a central role in this concept and were reconstructed in Renaissance style, with all traces of later eras removed. In general, post-Renaissance buildings, especially those from the 19th and early 20th centuries, were deemed unworthy of conservation until the 1970s, and were in part used in the "Bricks for Warsaw" campaign (an effort to rebuild Warsaw after it had been systematically razed following the Warsaw Uprising): with 38 million bricks, Szczecin became Poland's largest brick supplier. The Old Town was rebuilt in the late 1990s, with new buildings, some of which were reconstructions of buildings destroyed in World WarII. The Gothic monuments