Prague is said to be "Mater urbium" (the Mother of towns). The large gothic church of Our Lady before Tyn in the very centre of the city was an eye-witness to all the key adventures of the Czech nation since these events usually took place at the neighboring Old-Town square. The sanctuary is known especially for its Hussite and Utraquist past. Today, many tourists visit the place to find the tomb of Tycho de Brahe. The church is famous also due to its 17th century organ. The instrument has to be called "Mater organorum". Indeed, the masterpiece of Johann Heinrich Mundt (1632-1691) finished in 1673 for the church of Our Lady before Tyn is generally considered to be the THE organ. It is the most typical representative of the Czech organ building. Also, it is one of the best preserved instruments from the 17th century in Europe. If you think of a historical Czech organ, it is the first instrument which comes immediately to your mind. The organ was excellently restored in 1998-2000 by Klais (Bonn) thanks to a massive support of the German foundation (Zukunftsfonds). I can say without any exaggeration that it is the dream of every Czech organist to be allowed to touch this instrument.
Detailed essays on the history of the organ and its restoration are available, based on the account of prof. Hans-Wolfgang Theobald who was the leading figure of the restoration process.

Additionals: RP - HW, RP - HW, Cimbelstern - left and right, Calcantenglocke

https://www.sonusparadisi.cz/en/organs/czech/prague-baroque-v-2.html