Doorless 1,000 year old Polish church now makes shocking sense

It was reached from inside a royal palace

Archaeologists have solved the mystery of a 1,000-year-old Polish church known as the Rotunda of the Holy Virgin Mary, which baffled experts for lacking any visible door. New non-invasive radar and thermal imaging suggests it functioned as a private palace chapel, entered internally from a neighboring royal residence, reshaping how historians understand its role.