I came across Puzzling World a while ago when Googling puzzle sites. It was not quite what I expected, but looks kinda cool anyway.
Puzzling World is in Wanaka, New Zealand. It has a variety of puzzles and mazes, including a maze which is two storeys high and has 1.5 kilometres of passages (for my American friends, 1.5 kms is a little under 1 mile).
I've never been to New Zealand*, but if I do I shall try to make it to Wanaka so I can visit Puzzling World. If there were ever a New Zealand Rubik's Championship, this would be a great venue for it.
(* This is not entirely true, I have actually been to Auckland International Airport several times on the way to other locations. This doesn't really count though. All I saw was the inside of the airport while changing planes.)