lighter sandstone to repair the bullet holes. The main museum building was also damaged during the construction of the Prague Metro in 1972 and 1978. The opening of the North-South Highway in 1978 on two sides of the building resulted in the museum being cut off from city infrastructure. This also led to the building suffering from an excessive noise level, a dangerously high level of dust and constant vibrations from heavy road traffic. Due to the major reconstruction, the museum was closed between 7 July 2011 and 28 October 2018. Seven million items had to be relocated to the museum's depositories, in what has been dubbed the biggest moving of museum collections in Czech history. In February 2019, the museum's dome was opened for the first time, which also serves as a view of Prague. The eastern courtyard was also opened and was for the first time roofed, during reconstruction. Since November 2019, the underground corridor connecting the Historical Building to the New Museum Building is newly accessible. The museum was partially opened on 28 October 2018. Full completion of reconstruction was planned for 2019. Permanent exhibitions were planned to be opened to visitors in 2020–2021. New building The New Building of the National Museum (former Federální Shromáždění Building) is located next to the Main Building of the National Museum. The former Prague Stock Exchange was built in 1937. The building was extended in 1968–1973 for meetings of the Federal Assembly (parliament), the bridge girder was used there and at that time it was the largest hung glass wall in Czechoslovakia. Between 1995 and 2009 it was used by the Radio Free Europe/Radio Liberty. In 2000, the Ministry of Culture declared the building a cultural monument. In 2009, the building was assigned to the National Museum for its permanent extension and is used for short-term exhibitions. In 2019, the building was connected to the historical building through a tunnel. In 2020, the permanent exhibition History of the 20th Century should be opened here. Other buildings In addition to the Historical and New Buildings, the National Museum also includes these buildings: Náprstek Museum (Betlémské náměstí, Praha) Czech Museum of Music (Karmelitská ulice, Praha) Bedřich Smetana Museum (Novotného lávka 1, Praha) Antonín Dvořák Museum (Ke Karlovu 20, Praha) Památník Jaroslava Ježka (Kaprova ulice, Praha) Památník Bedřicha Smetany (Jabkenice) Památník Josefa Suka (Křečovice) Lapidarium, Prague (Výstaviště, Praha 7 – Holešovice) Národopisné muzeum