For thousands of years, people have been inspired to create giane monuments.Klaus Schmidt-the archaeologist who originally excavateds the site-believed that Gobekli Tepe was a holy meeting place.Made

of stepped pyramids, temples, and other stone structures, the ancient city is now one of

Mexico's most visited tourist destinations.The largest building in Chichen Itza is the

BTemple of Kukulkan-a pyramid with 365 steps.The tallest pillars are 18 feet (5.5 meters) in height and weigh 16 tons (more than 14,500 kilograms).To build a pyramid, Mayan workers created a base and added smaller and smaller levels as the structure rose Building the pyramids required many workers.The Mayans constructed the pyramids with carved stone.