Complex sentence: One unusual feature, added in 2002, is a back-lit stained glass window at front of the church; at night, it is a solitary panel of color and light, shining out on the otherwise dark Green.
Split into simpler sentences: One unusual feature of the church, installed in 2002, is a back-lit stained glass window at front of the church. At night, it is a solitary panel of color and light, shining out on the otherwise dark Green.