The GAME (question to developers)

All kind time of day.
Once again covered the inspiration to create something of their own and this time, in addition to inventing, reached the number of programs who are currently studying (Unity). And faced with the following choice:
When you create a game in which there are a number of locations between which the player will go it is better to create one large map of the same scene, or to break each location into its own scene?
including the battle scene mini-games, Danga (or something of the type Danja), etc. to create better in a separate draft or the same can be done a number of scenes that will be linked (have not yet made it to that moment to figure out how to tie them)
I would appreciate an answer and in the future I will ask more