I've always had a bit of a protestant mindset when it comes to places of worship... The simpler the structure, the better for communing with a higher being. This temple to catch the forest by Tezuka Architecture is a really lovely example of ecclesiastical architecture. Simple forms and materials allow you to be at peace. Without overstimulating your eye, your mind is allowed to venture beyond.
This is a lovely simple project... it also reminds me of John Ronan's Chapel in the Woods.