Although you could easily miss the church's entrance, concealed in a courtyard, the Týn is one of the landmarks of Staré Město thanks to its twin towers. The church dates from the same period as much of St Vitus's Cathedral (late 14th century), but whereas St Vitus's was constructed to show the power of King Charles IV, Týn was a church for the people. As such, it became a centre of the Hussite movement in the 15th century before being commandeered by the Jesuits in the 17th.
The Jesuits commissioned the Baroque interior, which blends uncomfortably with the original Gothic structure; they also melted down the golden chalice in the church façade, which was a symbol of the Hussites, before recasting it as the Virgin. At the end of the southern aisle is the tombstone of Tycho Brahe, Rudolf II's personal astronomer, who was famous for his false nose and gnomic utterances. Look closely at the red marble slab and you'll see the former; the lines above, translating as 'Better to be than to seem to be', are evidence of the latter.