Despite good ratings for the series, ABC stalled on picking up the show for a second season. This was because Wonder Woman was a period piece, being set in the 1940s, which made the set, clothing, automobiles, etc. more expensive to produce. While ABC had not yet committed, the show's production company Warner Bros. listened to an offer from rival network CBS. While ABC continued to make up its mind, CBS agreed to pick up the series on condition that the setting be changed from World War II (the 1940s) to the modern day (the 1970s). Changing the title to The New Adventures of Wonder Woman, the series was moved away from international intrigue to a more conventional police/detective action-type show that was more common in the 1970s.
Other changes in season two included a slight redesign (again by Donald Lee Feld, still credited as "Donfeld") of Wonder Woman's uniform. The bustier was more flexible, featured less gold metal in the eagle wings in favor of red cloth background, and was cut lower to highlight Carter's décolletage and cleavage. The star-spangled bottoms were cut higher in the thighs, with the number of stars reduced, stopping below her hips, and rearranged in a more symmetrical starburst pattern. The bracelets changed from dull silver-grey to bright gold, and were noticeably smaller and thinner. Her tiara, appearing unchanged when on Wonder Woman's head, would flatten to become a boomerang, and its ruby star functioned as a communications link to Paradise Island and her mother the queen.
Orion brings them to New Genesis where Diana has learned she has been in a coma for three days.Angered by this, she goes to talk to Highfather but realizes that in doing so, he saved her life. He informs her Orion is meditating in order to control his anger. After a heart to heart talk among each other, Diana finds out that Highfather will allow them to escape, on the condition that they surrender the baby. Diana, disappointed tries to remind Orion what she's done for him. Orion apologizes to Highfather and follows them through the boomtube with Zeke in tow, although Highfather says that their is no need.
To find the perfect location to shoot the Amazon island of Themyscira, the birthplace of Wonder Woman herself, the film's producers searched all over the world, finally settling on the Cilentan Coast: a stretch of coastline on the Tyrrhenian Sea, located in the Province of Salerno in Southern Italy. It was chosen because most beaches in the world that sit below big cliffs disappear beneath the tide for part of every day. Production designer Aline Bonetto and her location manager Charles Somers considered 47 countries and visited several of them before they found what they were looking for. Bonetto explained that, "Italy had beautiful weather, a beautiful blue-green sea, not too much tide, not too much wave. Our effects team added some cliffs in post-production, and it was the perfect way to go". The estuary at Lower Halstow in Kent is featured in the scene in which Diana arrives at a Belgian creek to make her way to the warfront. Bill Westenhofer served as the visual effects supervisor for the film and Martin Walsh served as editor.
On occasions Wonder Woman has employed a magical sword of unknown (though presumably Amazon) origin. This sword has been used most specifically against those with the power of invulnerability as invulnerability generally does not work against magical items. It is generally represented as a short sword. In Wonder Woman (vol. 4) #15, Hephaestus modifies Diana's bracelets so that she can manifest two short swords from them during battle.
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.