Memorial Complex in Idvor is dedicated to the life and work of Mihajlo Pupin. It is located in Pupin's native village Idvor in Vojvodina (Serbia). The Memorial Complex in Idvor consists of Mihajlo Pupin's home, the Old School, the elementary school which he attended and the National Home which is Pupin's foundation. From 1979 Memorial Complex in Idvor is protected as a cultural monument. About Mihajlo Pupin Mihajlo Idvorski Pupin, also known as Michael I. Pupin, was a Serbian-American physicist, physical chemist, and philanthropist. He is best known for his numerous patents, including a means of greatly extending the range of long-distance telephone communication by placing loading coils (of wire) at predetermined intervals along the transmitting wire (known as "pupinization"). Pupin was a founding member of National Advisory Committee for Aeronautics (NACA) on 3 March 1915, which later became NASA, and he participated in the founding of the American Mathematical Society and the American Physical Society. In 1924, he won a Pulitzer Prize for his autobiography. Pupin was elected president or vice-president of the highest scientific and technical institutions, such as the American Institute of Electrical Engineers, the New York Academy of Sciences, the Radio Institute of America, and the American Association for the Advancement of Science. He was also an honorary consul of Serbia in the United States from 1912 to 1920 and played a role in determining the borders of newly formed Kingdom of Yugoslavia. About the Memorial complex Native complex dedicated to Mihailo I. Pupin dated from 1979, when was 120 years celebration of his birth. In complex there is native house where he lived with his parents, his father Constantine, his mother Olimpijada and with his four brothers and five sisters. In addition the complex encompasses National House, witch Pupin built with his funds for Idvor and a museum, in the old elementary school building that he once attended. The birth house of Mihajlo Pupin The birth house of Mihajlo Pupin is a target of a sort of a pilgrimage. It was built as a larger type of the Pannonian house otherwise known as "the clod house". Its basis is rectangular, in the street line and its narrow side is facing the street. The street side of the house has one larger room with two windows and a smaller one with one window. The larger room leads to the kitchen which is the center of the