http://ul-segelflug.de/blog/512-remarkable-airport-but-unknown-to-most-pilots.html

"He" is Knuffingen International Airport, the largest miniatur
airport in the entire world. Located in the heart of Hamburg, within the
buildings of the UNESCO World Heritage Site "Speicherstadt". What is going on
here 365 days a year does not only make aviators and modelers hearts beat
faster.

The "operating area" of this unique model airport has the size of 125 square
meters (1.345,5 square foot), created and build by 82 employees in 150.000
hours. By investments of € 3.5 million one can imagine, that this is no amateur
model plant, build during a six year period and opened in May 2011.

With its numerous buildings and the underlying operations area, this is a
realistic and lifelike image of Hamburg-Fuhlsbüttel Airport. 45 of 55 scale
(1:87) self-made and faithfully painted airplane models are to admire "in full
motion", taking-off or landing at a 14 m long runway, taxiing to and off
different gates and parking-positions at the tarmac. Fuel trucks driving around
and to aircraft after landing for refueling.

For embarking and disembarking, passenger-stairs and gateways are docked to the
front door of the plane and raised to the height of the cabin-floor. All
movements of course fully automatic and computer controlled.