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.
In 2010, Warner Bros. stated that a Wonder Woman film was in development, along with films based on DC Comics superheroes the Flash and Aquaman. Both Wonder Woman and Aquaman were still under consideration for solo film subjects as of June 2013. DC Entertainment president Diane Nelson said Wonder Woman "has been, since I started, one of the top three priorities for DC and for Warner Bros. We are still trying right now, but she's tricky." On October 5, 2013, WB chairman and CEO Kevin Tsujihara said he wanted to get Wonder Woman in a film or on TV. Shortly afterward, Paul Feig said he had pitched the studio an idea for Wonder Woman as an action-comedy film. The studio then began to search for female directors to direct the film. While Michelle MacLaren was the studio's initial choice to direct (and while she initially indicated interest), she eventually left the project due to creative differences.
"Honestly... I think we're gonna be dead way before that. And you know what? I don't mind. It's an honorable end. But we've gotta shut Steppenwolf down. Superman's a no-show. You've got no powers, no offense. This guy might be working for the enemy. We don't now. You're tripping over your feet, and mine... whuf, you're gorgeous, and fierce... and strong. I know we went to war with the Amazons, but that was before my time. You know what? I don't wanna die. I'm young. There's shit that I wanna do. I just feel like... I didn't really embrace the sea or the land. I've been a loner my whole life. But being part of something bigger, like this... maybe I'm scared because... I'm meant to..."