The parish church of Otepää is a plain stone Lutheran church on the same hill as the castle ruin, white-washed and modest from outside but carrying enormous symbolic weight in Estonian history. The building dates from the 17th century with later renovations; the interior is pale, austere, and worth ten minutes on a quiet morning.
A small museum room in the bell tower (open in summer) explains the 1884 flag consecration and other moments in the church's history. The grounds, with their old graveyard and views down to the lake, are pleasantly atmospheric.