The world's largest model railway, occupying a full warehouse in the Speicherstadt and running on more than 16 km of track. Whole regions have been recreated in HO scale — Hamburg itself, the Alps, Scandinavia, Italy, the United States, and an airport with planes that actually take off and land. Sounds gimmicky but is genuinely astonishing in execution. Book online to skip the queues, which can stretch around the building on weekends.
Miniatur Wunderland
World's largest model railway in a Speicherstadt warehouse