The document describes 4 modern marvels: 1) Horns Rev wind farm off the coast of Denmark with 80 turbines capable of generating 160MW of power. 2) The seasonal ice road between Tibbitt and Contwoyto in Canada that allows transport for a few months when the ice is strong enough to support trucks. 3) The colossal ships used to transport huge loads like oil rigs and military radar that can lower cargo beneath the ship and raise it back up at sea. 4) The Magdeburg bridge in Germany that lifts to allow boats to pass through while maintaining road access, costing over 500 million euros to construct over 6 years.