Polish and Czechoslovakian military units were formed on the territory of the Volga Military District. Samara's citizens also fought at the front, many of them volunteers. After the war the defence industry developed rapidly in Kuybyshev; existing facilities changed their profile and new factories were built, leading to Kuybyshev becoming a closed city. In 1960, Kuybyshev became the missile shield centre for the country. The launch vehicle Vostok, which delivered the first manned spaceship to orbit, was built at the Samara Progress Plant. Yuri Gagarin, the first man to travel in space on April 12, 1961, took a rest in Kuybyshev after returning to Earth. While there, he spoke to an improvised meeting of Progress workers. Kuybyshev enterprises played a leading role in the development of Soviet domestic aviation and the implementation of the Soviet space program. There is also an unusual monument situated in Samara commemorating an Ilyushin Il-2 ground-attack aircraft assembled by Kuybyshev workers in late 1942. This particular plane was shot down in 1943 over Karelia, but the heavily wounded pilot, K. Kotlyarovsky, managed to crash-land the plane near Lake Oriyarvi. The aircraft was returned to Kuybyshev in 1975, and was placed on display at the intersection of two major roads as a symbol of the deeds of home front servicemen and air-force pilots during the Great Patriotic War. Post-Soviet period In January 1991, the historical name of Samara was given back to the city. Samara is one of the major industrial cities of Russia and has a multiethnic population. Geography Urban layout The development of the territory of modern Samara began in the 16th century with the foundation of the Samara fortress. Prior to the founding of the fortress, this area was home to piers for Volga ships. The official date of foundation of the settlement was the decree of Tsar Fyodor Ioannovich of 1586. The location of the town was predetermined by several factors: strategic placement in order to ensure security from the raids of nomadic tribes; expansion of the Russian state in the Middle and Lower Volga regions; convenient location in the steppe landscape, at the intersection of the Volga and Samarka rivers. The fortress was wooden with 11 towers, surrounded by a rampart and a moat, and occupied 5.2 hectares. Gradually, the population of the fortress increased, and the surrounding territories were developed. Simultaneously with the fortress in 1586, Boldyrskaya Sloboda arose on