La Danta, El Mirador, Guatemala.(cradle of Mayan civilization & largest Pyramid in the world)
Sacsahuaman, Cusco, Peru
http://universalconnection.files.wordpress.com/2007/10/sacsayhuaman.jpg (broken link)
Teotihuacan, Mexico
http://www.the-travels.com/wp-content/uploads/2011/10/Teotihuacan.jpg (broken link)
Amazon Rain forest, Brazil/Peru/Colombia (smaller areas in other South American countries)
http://www.monkeywrenchmedia.org/wp-content/uploads/2011/10/rainforest2.jpg (broken link)
here are some more