The World's Largest Model Airport

40,000 lights, 15,000 figurines, 500 cars, 10,000 trees, 50 trains, 1000 wagons, 100 signals, 200 switches, 300 buildings and 40 planes - now that's dedication!

http://singularityhub.com/2011/05/11/worlds-largest-model-airport-completed-in-hamburg-germany-150-square-meters-costing-4-8-million/