One of the most known exhibit in a building of the Museum of the City of Prague. It is a plastic model of Prague which has been created by Antonín Langweil in the first half of the 19th century. In 1822 he became a servant in the University library. In 1826 he saw the exhibition of a plastic model of Paris. Langweil was delighted at it and decided to create a similar model of Prague. Within three years he achieved to make about 600 houses of the Old Town, he completed the Old Town churches, Jewish Town, Lesser Town and Hradčany. His work represents historical model of Prague in a ratio scale 1:432 covering area of 20 m2. It is not only tourist attraction but first of all irreplaceable educational material.