A perfect example of late Baroque. The gate was built according to the design of the then famous architect Jonas Kristupas Glaubicas (Johann Christoph Glaubitz) and it hides many secrets of Vilnius Holy Trinity Church and the Basilian Monastery. The monastery and the church belonged to the religious Uniate community for two hundred years. In early 19th century, a prison was established in the monastery. Today there is a memorial plaque with the name of the most notorious prisoner, poet and philomath of Vilnius University Adomas Mickevičius inscribed.