Loreta is a pilgrimage complex wrapped around a small stone house, and on the hour its tower plays itself. A carillon of 1694 sits in the roof — thirty bells, twenty-seven of them sounding — and it runs by machine, so the tune starts on time whether anyone is listening or not. If you arrive at five past you have missed it. The house at the centre is a copy of the one in Loreto in Italy, and pilgrims came here to walk round it.
Prague's copy was begun in 1626 and consecrated on 25 March 1631, paid for by Countess Benigna Kateřina of Lobkowicz. It went up in a country that had been Hussite and had just been forced back to Rome, so the shrine was an argument as much as a chapel. Kryštof Dientzenhofer and his son Kilián Ignác later wrapped it in the Baroque front and cloisters you walk through now. The clockmaker Petr Neumann built the carillon, and the treasury upstairs holds a diamond-covered monstrance called the Prague Sun.