Projects - treeview

I would like to ask, if there is some chance to have something like "treeview" on Projects site with for example 4 sub-levels (or more - automatic sub-level count)?

Best view will be...
first level - main projects
second level - child projects of first level
third level - child projects of second level
fourth level - tasks of child projects of third level

We have many projects and child projects. It is very uncomfortable.

Thank you. Jan