ancient

Tourists visit Karnak temple in Luxor, a town 700 kilometres (435 miles) south of the Egyptian capital, Cairo, on June 11, 2015. The ancient temple was open as usual despite a foiled suicide and gun attack on the world-famous site that police said would have been a "massacre".

Mohamed El-Shahed/AFP

Tourists visit Karnak temple in Luxor, a town 700 kilometres (435 miles) south of the Egyptian capital, Cairo, on Thursday. The ancient temple was open as usual despite a foiled suicide and gun attack on the world-famous site

People look at the horizon soon after su...People look at the horizon soon after sunrise on June 21, 2013 from the rocky crest filled with astronomical markers at the megalithic observatory of Kokino during the summer solstice. The ancient astronomic observatory, located about 100 kms northeast of Skopje, dates back to more than 4,000 years ago. AFP PHOTO / ROBERT ATANASOVSKIROBERT ATANASOVSKI/AFP/Getty Images

Robert Atanasovski/AFP

People watching sunrise from the megalithic observatory of Kokino, Macedonia during the summer solstice. The ancient astronomic observatory, about 100km northeast of Skopje, dates back to more than 4,000 years ago