A closer look

Nothing says 'vacation' like a brisk walk across a 20-mile dam built purely because the Dutch were tired of their living rooms flooding. When the Afsluitdijk was completed in 1932, it did the job of walling off the ocean entirely too well. The massive barricade transformed the saltwater Zuiderzee into the freshwater IJsselmeer, instantly devastating the region's thriving saltwater fishing industry for the minor convenience of not drowning.