Astronomy
Mysterious Geoglyphs from an Ancient Era
Nazca,Peru
Journey through the Wonders of Science
Florence,Italy
Astronomical wonders at the Tropic of Cancer
Pu'er,China
Where Time and Longitude Converge
London,United Kingdom
Stargazing in Pristine Skies
Lake Tekapo,New Zealand
A Marvel of Maya Calendar and Architecture
Chichen Itza,Mexico