Church of St. Martin-in-the-Wall, Prague

In this unassuming Gothic church tucked away in a corner, once part of the Old Town fortifications, a significant religious milestone occurred in 1414: Holy Communion was administered to the Bohemian laity in both bread and wine, departing from the Catholic tradition of offering only bread to the masses. This act marked the emergence of the chalice as a powerful symbol of the Hussite movement.

While the church's interior may not rival the grandeur of other religious structures in the Old Town, it welcomes visitors for a brief glimpse every afternoon. The presbytery showcases one of the oldest groined vaults in the Czech Republic, adorned with ornamental coping stones featuring a rose and a star motif. Regular services are conducted in German and Czech, accompanied by organ recitals and other performances.