"Whereas, in order to the finding out of the longitude of places for perfecting navigation and astronomy, we have resolved to build a small Observatory within our Park at Greenwich upon the highest ground … with lodging rooms for our Astronomical Observator and his Assistant." 

The above was the order given by King Charles II in his call that led to the founding of Greenwich's Royal Observatory in 1675 (“History of the Royal Observatory”). The obseratory is located in Greenwich Park, a place that has much significance to the British monarchy and its people for its beauty and rich history. The observatory stands as Britian's oldest scientific instituiton built for that purpose. Architect Chritopher Wren, known for his work on St. Paul's Cathedral, and his assistant Robert Hooke built the observatory atop the ruined Greenwich Castle, finding a way to repurpose and include the piece of history. The Royal Observatory housed the Astronomer Royal, those who were renowned in their work honored with the title and tasked with advising the crown in matters relating to astronomy. Many scientific observations were made in the observatory, including those that led to the adoption of the Greenwich meridian and Greenwich Mean Time.

“History of the Royal Observatory.” Royal Museums Greenwich, https://www.rmg.co.uk/royal-observatory/history

"The Great Equatorial Telescope." Royal Museums Greenwich, https://www.rmg.co.uk/royal-observatory/attractions/great-equatorial-tel...