The Loreta in Prague was built between 1620-1750. The main façade is Baroque and was designed by Kilián Ignác Dientzenhofer in 1721.
The main dominant of the Loreta is an older, early Baroque tower, which apart from a clock contains a carillon. The Amsterdam bell maker Claudius Fromm made 27 bells with a range of 2,5 octaves and weighing in total 14 metric cents. The bells were put together in Prague by the clock maker Petr Neumann and then they were consecrated - Emperor Leopold I himself became the godfather of the largest bell. The carillon first rang out on August 15th 1695. The repertoire of the carillon includes several song variations and today plays on every hour.
The Prague Loreta was founded in 1626 by Benigna Kateřina from Lobkowicz, a member of a wealthy Czech aristocratic family. She commissioned the Italian architect G.D.Orsi to build the chapel which he finished in 1631. A portrait of the founder of the Loreta hangs in front of the Treasury, which is located on the first floor of the western side of the cloisters.
The Treasury is the most attractive part of the Loreta. It contains monstrances and jewels that were donated mostly by the rich aristocracy of the period after the defeat of the Battle at the White Mountain. They are not only of great monetary value, but especially of great artistic value as they document the excellent workmanship of the 17th and 18th centuries.
The most valuable object of the treasure is a diamond monstrance called the Prague Sun. It is made of gilded silver and is inlaid with 6 222 diamonds, which it is said originally adorned the wedding dress of one of the founders of the Loreta.