Imagine you’re visiting the the world’s biggest model railway. It is vast: more than 16,000 metres of track passing through painstakingly realistic dioramas of Italy, Rio de Janeiro and Provence, to name just a few. Located in a former warehouse in Hamburg, it’s a place of wonder. Indeed, it’s called Miniatur Wunderland – Miniature Wonderland. And then, before your eyes, it begins to crack up. A castle is consumed by flames. Monaco is assailed by a hurricane.