You don't need to be a model railway enthusiast or a 10-year-old to be blown away by the sheer scale and attention to detail of the Miniatur Wunderland. The largest model railway in the world features more than 14,000 square feet of little trains click-clacking their way through wonderfully faithful miniature replicas of Hamburg itself as well as foreign towns in Switzerland, Austria, the United States, and elsewhere. Planes land at a little airport; every 15 minutes,
day turns into night and hundreds of thousands of LED lights illuminate the trains, buildings and streets. Unsurprisingly, it's one of Hamburg's most popular attractions, so it's best to book ahead, particularly on weekends and school holidays, when waiting times for entry can stretch to a couple of hours.