When we visited the Netherlands with our overseas family, our trip to Madurodam was a hit with all of us. I can only imagine what a visit to Miniatur Wunderland in Hamburg, Germany would be like. A friend posted this on Facebook, and I knew the family members who are entranced by minatures needed to see it.
Unbelievably, the airport is just one "small" part of Miniatur Wonderland. Here's the official video (English version) that shows a lot more. In fact, it shows A LOT more, as in: this realistic, exquisitly-crafted, miniature world is decidedly Not-Safe-For-Grandchildren in places, as you can see.
If we ever get to Hamburg, I'm going to visit it anyway.