Traverse town is a city where you can resupply and rejuvenate yourself by going to inns for rest. You can also buy new parts for gummi ships or get it fixed by the best available mechanic there. Here you will also find moogles to synthesize the items you found on other world into stronger weapons or rare items. There are some rumors here that the moogles can make the ultimate weapon though I am not sure of their truth. You can also rest at the local cafe in the town square.