The wonders of the ancient world have long cast a spell over travelers from every corner of the globe.
|Portion of the Great Wall of China at Jinshanling, fortification against earthling-barbarians.|
|Map: The Great Wall of China is many walls.|
|Angkor Wat, Siem Reap|
- Duncan Madden writes topical, environmental, and experiential travel stories. Opinions expressed by Forbes contributors are their own.