Expandable and collapsable Flowchart software?

Hi

I'm looking for a program and (probably I'm an idiot) just can't find it anywhere!

What I want it to do is very, very simple. I want to write a flow, but be able to collapse it so I can keep a clear overview. For example:

1. City

1.1 Locations

1.1.1. Bar

1.1.1.1. Buy items

1.2. Stores

1.2.1 ....

You get the idea. I tried (geheh) Word... But this was so frustrating I threw in the towel. Can someone help me find a program that gives me the ability to make this easy overview?

Thanks in advance!