Which train to Coliseum in Rome?
 

Is Ostiense the best? I've looked around and for some reason, can't find the right exit. Thanks!

The Coliseum has it's own exit called colosio ( not sure about spelling) The train system in Rome has only two lines which I think are the red and yellow lines( been several years so not sure ) You may have to change trains depanding on where you start. Anyway, the coliseum is right outside of the exit.

Don't you mean which station?

Ostiense i believe would be the closest TRAIN station - not metro station.

As explained on your original thread, take the train to Ostiense and then the metro from Piramide to Colosseo.