The building of the Federal Assembly is a unique cultural monument

Prague - The business card of the building of the former Federal Assembly in Prague (Prague mayor Bohuslav Svoboda (ODS) today acknowledged a significant architectural intervention into the building):
Before the current form of the building was erected in the vicinity of the National Museum, at the intersection of today's Wilsonova and Vinohradská streets, a neoclassical building of the Prague Stock Exchange was built there from 1935 to 1939 according to the design of Jaroslav Rössler. The Stock Exchange Palace was ceremonially opened on April 6, 1938. In 1948, the exchange was permanently closed, and the building, along with a residential house, was expropriated without compensation and handed over to the National Assembly.
In the 1960s, a decision was made to expand the building for the needs of the parliament. An architectural competition was won with a unique solution by a team of authors comprising Karel Prager, Jiří Kadeřábek, and Jiří Albrecht. They decided to preserve the original building and obtain new spaces through an upper extension and annex. The Stock Exchange Palace was reconstructed and incorporated into the new building.
The structurally daring construction began in 1966 and lasted six years. The stock exchange building was bridged by a large spatial grid, which is supported from below by pylons. The grid structure, weighing several hundred tons, was welded on the ground and raised to its place as a whole. Two floors of new space then grew on the grid. The building also included the largest suspended glass wall in what was then Czechoslovakia.
In the 1980s, the building underwent extensive reconstruction, but after the dissolution of the federation, it ceased to serve as the seat of parliament.
Since 1995, Radio Free Europe/Radio Liberty (RFE/RL) has been based here, having relocated to Prague from Munich. In the autumn of 2001, in connection with the terrorist attacks in the USA, considerations began about moving the radio station from the center to a safer location. The radio station moved out in 2008.
Already in November 2006, the government approved the free transfer of the building from the Ministry of Finance to the Ministry of Culture, which later decided to hand over the building for use to the National Museum.
In June 2000, the Ministry of Culture declared the building a cultural monument.
The building has many opponents as well as supporters; experts generally appreciate it, although they often talk about it as a good building in the wrong place. In 2004, it was ranked among the ten most significant Czech buildings of the last 50 years in a poll by the magazine Architekt.