Standing at the base of the Great Pyramid, it is hard to imagine that this monument—which remained the tallest building in the world until early in this century—was built in just under 30 years.

"The Great Pyramid at Giza is known to have an amazing character of concavity that each of its four faces is slightly ...

The Great Pyramid’s architects and builders worked ... The Acropolis is a sacred hill in the heart of Athens with the Parthenon at its peak. Beside it is a smaller temple known as the ...