Architecturally, this 14th-century church is fairly straight up and down Gothic, with a vaulted ceiling and high windows, but the interior was later refurbished with baroque decorative elements, such as the altar. The clash of styles leaves a little to be desired, and the most attractive feature is the tranquil cloisters, reached by an unmarked door on the right (facing the altar) and sporting a Renaissance-era well. The church is famous as the venue for the very first performance of Mozart's Requiem in 1793.