Filming occurred outside the U.S. Capitol in Washington D.C. during mid-June. Other filming locations around DC included the Penn Quarter neighborhood, McPherson Square, the DAR Constitution Hall near the White House, the Museum of Natural History (Smithsonian), and the Lincoln Memorial. By mid-July, production in the United States was completed and moved to England. In August, filming on location took place in several places around London, including St. Andrew's Place, Regent's Park and the Royal College of Physicians. Between September and October 2018, production also took place at Almería, in Andalusia, southern Spain, as well as Fuerteventura and Tenerife in the Canary Islands.