The Arnau Church of St. Catherine of Alexandria is a Brick Gothic church 8 km east of Kaliningrad near the Pregolya River and the Russian-Lithuanian border. It was built in the 14th century as a Catholic church in the East Prussian village of Arnau (modern ) and until recently contained more than 200 medieval frescoes from the 14th century. It became a Lutheran church after the Reformation and the frescoes were whitewashed, then uncovered in the early 20th century. The graveyard contains the tomb of Theodor von Schön.