it is notable for its rivers, willow trees, flowers and parkland. The streets are laid out in a north–south, east–west grid, giving the city an orderly appearance. North Korean designers applied the Swedish experience of self-sufficient urban neighbourhoods throughout the entire country, and Pyongyang is no exception. Its inhabitants are mostly divided into administrative units of 5,000 to 6,000 people (dong). These units all have similar sets of amenities including a food store, a barber shop, a tailor, a public bathhouse, a post office, a clinic, a library and others. Many residents occupy high-rise apartment buildings. One of Kim Il-sung's priorities while designing Pyongyang was to limit the population. Authorities maintain a restrictive regime of movement into the city, making it atypical of East Asia as it is silent, uncrowded and spacious. Structures in Pyongyang are divided into three major architectural categories: monuments, buildings with traditional Korean motifs and high-rises. Some of North Korea's most recognisable landmarks are monuments, like the Juche Tower, the Arch of Triumph and the Mansu Hill Grand Monument. The first of them is a granite spire symbolizing the Juche ideology. It was completed in 1982 and contains 25,550 granite blocks, one for each day of Kim Il-sung's life up to that point. The most prominent building on Pyongyang's skyline is Ryugyong Hotel, the seventh highest building in the world terms of floor count, the tallest unoccupied building in the world, and one of the tallest hotels in the world. It has yet to open. Pyongyang has a rapidly evolving skyline, dominated by high-rise apartment buildings. A construction boom began with the Changjon Street Apartment Complex, which was completed in 2012. Construction of the complex began after late leader Kim Jong-il described Changjon Street as "pitiful". Other housing complexes are being upgraded as well, but most are still poorly insulated, and lacking elevators and central heating. An urban renewal program continued under Kim Jong-un's leadership, with the old apartments of the 1970s and '80s replaced by taller high rise buildings and leisure parks like the Kaesong Youth Park, as well as renovations of older buildings. In 2018, the city was described as unrecognizable compared to five years before. Landmarks Notable landmarks in the city include: the Ryugyong Hotel the Kumsusan Palace of the Sun the Arch of Triumph (heavily inspired by, but larger than, Paris's Arc de Triomphe) the birthplace of Kim Il-sung at Mangyongdae Hill