June 22 marks the 350th anniversary of the Royal Observatory Greenwich, the home of the historic Prime Meridian that is considered by many to be the birthplace of modern astronomy. To celebrate, we're taking a look back on how the famous site became the epicenter of astronomical research, timekeeping and navigation, while highlighting how its purpose has evolved over time.
The Royal Observatory's story began in 1675, when King Charles II of England decided that a purpose-built scientific institution was needed to solve a centuries old question - how can sailors navigate safely at sea?
