Cooled by fountains and waterfalls, the Bagh-e Shahzadeh garden in Iran is 8 acres of lush green - think roses, pear trees and stately stone pavilions - rising out of the dusty desert.
Not so much planted as painted, the 18th-century gardens at the Schloss Schonbrunn palace in Vienna feature symmetrical strokes of bright color on canvases of immaculate green lawn. This is 457 acres of cool, manicured perfection; even nature, apparently, bowed down to the Habsburgs.
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