Where is thermostat on '95 Civic?

I need to replace the thermostat on my 1995 Honda Civic LX. I've looked at
the engine and their are two possible places for it. One is at the engine
end of the lower radiator hose, where the thermoswitch is. The other place
is at the engine end of the upper radiator hose. Both have housings that can
be removed with a few bolts, I'm just not sure which one it is. Sorry for
the newbie question, I've only changed a t-stat once before on a VW.