What is the place of worship? What are the major features of this place?

A Tiffany Stained Glass Window at ASC
in Boston, MA. 

The Protestant place of worship is a Church, with common architecture in the shape of a cross. Churches often have a vaulted space or dome, to attract attention both to, and from the Heavens. Churches will often have stained glass in a circular shape to represent eternity. A spire on the top of a Church is also very common, because it is a symbol of prosperity.