3D maze - Code review

[McHaul]

Hi all.

So it's been a while since I did anything in c++, so I though making a 3d maze would be a good learning exercise.

Hopefully it's fine, but I'm wondering if the code is readable and understandable, if I have made
noobish mistakes, and if I've seriously over-engineered.
(Also if it is acyclic, I think it is, but I probably missed something.)

I based it on Eller's algorithm
( http://weblog.jamisbuck.org/2010/12/29/maze-generation-eller-s-algorithm )

Maze.h:
https://github.com/FredrikUlvin/Maze/blob/master/include/Maze.h

Maze.cpp
https://github.com/FredrikUlvin/Maze/blob/master/src/Maze.cpp


TL;DR: Please review, if it is good enough for part of portfolio for instance.

Thanks for your input.