Taj Mahal

Molded out of red sandstone and white marble, and sparkling with the glint of semi-precious stones, this mausoleum of northeastern India needs no justification to appear on our list. Frommer's says, "It's not just the perfect symmetry, the ethereal luminescence, the wonderful proportions, or the sheer scale," that makes us revere the Taj Mahal. It's also "the exquisite detailing covering every inch of marble that justifies it as a wonder of the world." Its amorous background also feeds our admiration: It was commissioned by a 17th century Mughal emperor to honor the memory of his favorite wife, Mumtaz Mahal. Consider planning a trip for sometime between October and March to behold Taj's majestic domes, chambers and minarets; that way the weather will be somewhat cooler for walking around. If you have time, stay from the early morning until the late night, as "the radiance of the Taj under the moonlight is beyond any explanation," notes TajMahal.org.uk.