Rotterdam is Europe's busiest port. Watch as the most powerful tugboats in the world tow gargantuan container ships and tankers through the narrow channels of the hectic harbour. Then, in order to avert another disaster from flooding the Dutch have invented a whole new way of constructing homes: they float! Find out how the world's largest flower auction sells over 20 million flowers and plants every day. Finally, come for a ride in the world's fastest road-car, the Donkervoort, which can go from 0-100 in 3.6 seconds.