a thriving city almost entirely below sea level

Perhaps no city embodies the Netherlands' multi-pronged approach to water management as much as Rotterdam, a thriving city almost entirely below sea level.When a storm threatens,densely populated older districts are protected by traditional dikes.Meanwhile, newer districts have been artificially elevated,often sporting green roofs that store rainwater.Numerous structures around the city transform into water storage facilities,including parking garages and plazas which normally serve as theaters and sports arenas.