This church is a curiosity. There's an upper church - of the Holy Cross - and a church on the lower level, St. Bartholomew, which is nowadays the parish church of the Ukraine-Byzantine congregation. The latter was not open but I heard it has a beautiful gilded iconostasis.
The church of the Holy Cross was built in the 13th century (consecrated 1295) by Duke Henry IV as a reconciliation gift to Bishop Thomas II. I couldn't go in, an iron grating at the entrance was locked, but could at least peek inside. Its interior is not overly ornate, but the Gothic vault was quite nice to look at. I read somewhere there's a nice Gothic triptych inside but I couldn't see it. The most impressive view is definitely the exterior with the majestic staircase leading up to the higher of the two entrances and the tall 70 m high steeple.
The Gothic Holy Cross Church (Kosciola sw. Krzyza) was founded in the late 13th century. It is a two level church whose upper level includes a copy of the Turin Shroud.
Just in front of the church stands the Baroque monument to Jan Nepomucen which was erected in 1731. He was a famous Czech martyr who lived in the 14th century.
The Holy Cross Church is situated in the Ostrow Tumski district on the right bank of the Odra river.
Church of Holy Cross is a Gothic church, first mentioned in 1288, that actually consits of two different churches wchih were combined. In front of it on street-side is the Baroque monument of Saint Johannes Nepumuk, a martyr living in the 14th century.
Holy Cross church is an example of gothic architecture. It's worth visiting because of its unique two-level inside construction. In front of the church you will see a baroque monument of Saint Jan Nepomucen - Czech martyr living in the 14th century. Perhaps you remember his figure from Karol's Bridge in Prague.