Nestled deep in the Nubian Desert of southern Egypt lies a prehistoric relic that has reshaped our understanding of ancient ...

An ancient and enigmatic stone circle in the Middle East may not be a prehistoric astronomical observatory after all, according to a new study of satellite images. But some of the criticisms may ...

For some of the best views of the harbor, head to the historic Portland Observatory, the country's last standing maritime signal tower. Built in 1807, the octagonal, 86-foot-tall tower was ...