Reformed (calvinist) church in <a href="https://en.wikipedia.org/wiki/%C3%93csa" class="extiw" title="en:Ócsa">Ócsa</a>, in <a href="https://en.wikipedia.org/wiki/Pest_county" class="extiw" title="en:Pest county">Pest county</a>, Hungary. Founded by the <a href="https://en.wikipedia.org/wiki/Premonstratensian" class="extiw" title="en:Premonstratensian">Premonstratensian Order</a> in the 13th century.
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