On Native American Heritage Day, we examine a long-overlooked marvel of ancient engineering that had been tucked away beneath a golf course in Ohio. It is a place some archaeologists say is on par ...

Localities will go to great lengths to attract tourism, but what happens when there is no natural wonder to gawk at? Build it, and they will come. The world is filled with engineering and ...

GRAND CANYON WEST, Ariz., March 18, 2007 — -- Four thousand feet below the canyon rim, the Colorado River continues to slowly eat away at rock formations that created this vast and awe-inspiring ...

The ancient Tunnel of Eupalinos on the island of Samos, Greece is considered a marvel of engineering and craftsmanship.

NOTE: If you are short on time, watch the video and complete this See, Think, Wonder activity: What did you notice? What did ...