I am writing a story in which my characters live in a fictional town that I have created but I am a visual person so I was wondering if you know some website where we can create the plan of a fake town? I hope that was clear, thank you!

Of course! According to Rachel Aaron/Rachel Bach of This Blog Is a A Ploy, you can now use Google Maps to make custom maps which is great news for all authors. “Being an author practically guarantees you will struggle with real life details like travel distance at some point in your book. If you’re writing about a real city, the bar is even higher. Even if you’re writing about your own city, a map can be a life saver just for keeping everything straight in your head,” says Bach; you can read more about her discovery and the How-To Tutorial [here]. 

Here are some other sites I’ve found that I hope might help:

• Create Your Own Town (For Elementary school children, but may be fun to play with)
  
• Fantastic Maps: How To Design A Town
• Zee Maps: Free Map Creator 
• My Mini City: Build Your Own City
• Dave’s Mapper for RPG