The Alhambra. Jerusalem's Dome of the Rock. The Taj Mahal, which bankrupted an empire in the name of love, and the Eiffel Tower, the first structure to surpass the height of the Great Pyramid of Cheops. Through monuments we learn about history, culture, the rise and fall of civilizations--for example, that to create the giant stone figures of Easter Island, up to 20,000 natives must have lived there before denuding the island's rain forests and disappearing...