That is the chancel part of the choir, where the current altar is. The main altar is in the sanctuary at the back of the choir. Nowadays a new altar in the chancel is used so the priest can face the congregation (whereas using the main altar way at the back in olden times meant he had often his back to the people). The benches are for the choir (people who sing), other clergy and the altar boys. However, by the time I was around in the 60s, the choir was singing mostly from beside the organ, way at the back of the church. The fence separating the choir from the nave is called a balustrade. Up to the early 70s, that is where we went to kneel to receive communion in our mouth from the priests who stood behind it. Now the priest stands in front of it in the transect at the front of the nave and people receive communion in their hands while standing.
http://2008remodel.files.wordpress.com/2008/03/layout.gif?w=500
http://en.wikipedia.org/wiki/Chancel
http://en.wikipedia.org/wiki/Baluster
http://en.wikipedia.org/wiki/Church_architecture#Internal_features
http://simple.wikipedia.org/wiki/Church#The_parts_of_a_church
Should have been more of a lesson for those thinking the internet offers real social contact, ....
