Visited March 27, 2011
St. Mary Magdalene's Lutheran Church.
We went there because our Estonian teacher's aunt lives there, and the point of our language immersion was to get away from areas where people speak English. Koeru qualifies (except for the aunt, who actually teaches English!).
This church is one of the oldest medieval churches in Järvamaa with a Baroque spire, and was apparently built in the 13th century.
The rose window looks a bit like a nuclear hazard sign to me!