In 1280 Habart of Žirotín founded a cloister for the Poor Clares, the third Franciscan cloister in Bohemia. Nuns from the Cloister of Anežka Přemyslovna from the Old Town in Prague were brought into this cloister. Týnec Cloister has witnessed several disasters. In 1382 it burnt down, it was rebuilt again and survived until the Hussite unrests. "When the Louny citizens pulled down the Dominican church in their town, they moved to help the Prague Hussites in their fight against Emperor Sigmund, they attacked the Panensko-Týnecký cloister, burnt it down and killed the nuns".

This is how the event was recorded by V. B. Třebízský in his short story Jan Abatyše. "The same fate met the Prague cloister that was then left desolate for 136 years." Nuns from Prague ran to Týnec to seek protection from the brothers Jaroslav and Plichta of Žirotín who repaired their damaged cloister. The Žirotíns remained stern Catholics, although they sympathised with moderate Hussites in their nationalistic fight, and therefore the Hussites did not harm the nuns at Týnec anymore, despite the fact that the cloister was situated within the area of the Hussite triangle: Žatec (the Sun), Louny (the Moon) and Slaný (the Star). In 1443 Jaroslav, the last issue of the famous House, started repairing the cloister. He managed to repair the cloister, however his death prevented him from completing the minster.

The unfinished minster hides several mysteries:

we do not know exactly when it was founded, who founded it and who built it. But we do know, and it has been proven by psychotronics and their measurements, that the minster is situated in a very strong positive zone. The positive energy has the ability to remove states of depression, it brings optimism, good mood, energy and joy of life. It is recommended that people suffering from manic depression, lack of self-confidence, sensitive people and people with a tendency to commit suicide come to stay here. The energy of this place helps to strengthen the immune system of the human organism, and it is recommended that people, who have suffered cerebral palsy, a cerebrovascular accident or any other injuries to the head, should come and stay here for longer periods of time; it is enough to sit and relax on the grass in the minster surroundings.