Baku attaches great importance to the development of culture, education and science and technology in the process of industrial restructuring. Azerbaijan's education system is divided into preschool education, general education in primary and secondary schools, vocational and technical education, secondary professional education and higher education. The literacy rate of residents reached 99.9%. Baku has more than 65,438+000 scientific research institutions such as Azerbaijan Academy of Sciences and more than 65,438+00 institutions of higher learning. The most famous institution of higher learning is Baku State University, along with Azerbaijan Petroleum Institute, Azerbaijan Medical College and Higher Conservatory of Music. Akhundov National Library in Baku, built in 1923, has a collection of more than 3 million books and is the largest library in Azerbaijan. In addition, there are the senac-Karl Mosque Tower built in 1 1 century, the Notre Dame Tower and the Kizikaraseta Tower built in12nd century, and the Silva Palace built in15th century. The famous "Notre Dame Tower" is located in the center of the old city of Baku, near the Caspian Sea, and is a part of the Khan Palace in the12nd century. The circular part of the tower faces north, and the cold wind bypasses it; The prominent wing of the tower faces south, and the cool south wind in summer leads into the city. The old city is always warm in winter and cool in summer. Numerous scenic spots and historical sites provide favorable conditions for the development of tourism.